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  • Michael Krakovskiy 11:20 am on May 19, 2011 Permalink | Reply
    Tags: Cash, Coin, , Currency, , ILS, , , OCR, retail job   

    Cash register nunismatics 

    I spent two long summers working the seafood counter at Nathans at Coney Island. One of the few joys of a retail job like that is looking for foreign coins in the cash register at the end of the shift.

    I was freshly reminded of that this morning, noticing that some generous soul donated what looks like 5 shekels at the local Dunkin Donuts.


    A lame startup idea occured to me: building a coin counting machine that would OCR all the coins, sorting out any coins that have a nunismatic value higher than face value.

     
  • Michael Krakovskiy 3:15 am on March 16, 2006 Permalink | Reply
    Tags: 5 yen coin, , , Currency, , , Japanese yen, , , , metal container, Omikuji, Ryōan-ji, , , , Zeniarai Benten Shrine,   

    Deadprogrammer Visits Japan Part III : Monk Money 

    Money-making schemes are a on my mind a lot lately, so here’s a little bit about ingenious schemes by which Japanese monks are raising money.

    As I don’t have much understanding of Buddhism and Shinto, Japanese temples did not leave much impression upon me. After a while, they all started to look alike. One common element was the fundraising gimmicks used by the monks which I found rather ingenious.

    First up, there’s omikuji, literally “sacred lottery.” You deposit a 100 yen (about $1) coin in a slot (on an honor system), shake a metal container with wooden stick marked with a hieroglyph (probably a number), match it up to a drawer and take out a sheet of paper. The fortunes contain a variety of outcomes, from blessing – dai-kichi (now I know what Daikichi Sushi restaurants are named after:), through lesser forchunes such as near-small-blessing, sue-shō-kichi, and to great curse – dai-kyō.

    The genius of the system is that if you don’t like your fortune, you can tie it on special pine planks (according to Wikipedia it’s a pun – “pine tree” is “matsu” and “to wait” is “matsu”). Then you can try again.

    Somewhere, I think it was near Ryoan-ji Temple I encountered this attraction. A little statue of a deity with a little bowl next to it. From what I understand, you need to throw a coin into the bowl for good luck. As you can see, it’s not too easy. My wife managed to get a 5 yen coin in though.

    Here are temple workers collecting the bounty. They even have little bamboo rakes!

    Then there’s Zeniarai Benten Shrine, where you can rent a special basket to wash your money is an underground spring, that is supposed to double your money. I hope washing a banking card works too :)

    I’d like to finish this with a little news item that I pulled from Mainichi news: Man who stole 2 yen from shrine sentenced to 22 months behind bars. A yen is about 1 cent. Pretty rough, eh? Well, the article goes on to say that he also stole some batteries…

     
  • Michael Krakovskiy 2:12 pm on January 16, 2006 Permalink | Reply
    Tags: , , Cash register, cashier, , Coins of the United States, Coinstar, Commerce Bank, crummy drugstore chain, Currency, , economist, Eliot Spitzer, Health-o-Meter physician, high real estate costs, John Galt, , Ku Klux Klan, local bank, , , , , Pound sterling, Reade, Springfield mall, , United States dollar, , , , worse real estate hogs   

    The Real Estate Hogs and The Coin Counting Robot 

    Remember that The Simpsons episode where Starbucks swallows every store in Springfield mall?

    “… Bart, while walking through the Springfield Mall, passing several Starbucks, goes into a store called “In and Out Piercing”.
    Employee: Can I help you?
    Bart: I’d like to get my ear pierced.
    Employee: Well, better make it quick, kiddo. In five minutes this place is
    becoming a Starbucks.
    Bart gets his ear pierced, and has a diamond-shaped clear stone inserted into the new hole. As he leaves the store, it, like all of the other stores above and around it, is transformed into Starbucks.”

    New York City was one of the last markets that Starbucks entered, mostly because of high real estate costs. But besides Starbucks, there are two types of businesses that swallow an enormous portion of commercial space in NYC: drugstores and banks. Whenever you see a sizable store for rent, it’s almost inevitable that it will become a drugstore or a bank.

    The drugstore business is not particularly profitable, but one chain, Duane Reade, seems to be opening store after store. In my neighborhood there are two Duane Reades one block from each other, and several other equally lame pharmacies. There’s an interesting article called The Mystery of Duane Reade which among other things, addresses a question just as interesting as “Who is John Galt.” Unlike Galt, Duane Reade is not really a person. The crummy drugstore chain derives it’s name from the first store that was located on the corner of Duane St. and Reade St. in Manhattan.

    Banks are even worse real estate hogs, and are popping up even faster than Duane Reade and Starbucks. There are two stores that went out of business recently in my neighborhood, and both are being replaced by banks. There’s a bank across the street from where I live, and one or two on almost every block. Yet there are no supermarkets bigger than a tiny little Pioneer in a 20 block radius.

    The stiff competition is forcing banks to offer new services to attract customers. Commerce Bank, for instance, offers a service called “Penny Arcade.” They basically have change-counting Coinstar machines without the fee. All you have to do is get the receipt from the machine, and the cashier will exchange it for paper money.

    During the last major cleaning fit that I had, I took my overflowing coin bowl and dumped it into a canvas bag. I weighted it on my Health-o-Meter physician’s scale which is exact to within 1/4 lb. The scale read 29 1/2 lb.

    Here’s what 29 1/2 lb of coins in a Strand bag look like:

    I dragged the heavy money bag to the bank, and proceeded to empty it out, handful by handful into the Coinstar machine. I had to suffer loud and annoying cartoon voice aimed at kids and overall felt like a dork, but I got rid of all the change and cashed in my printed receipt. As I was curious of the how exact the coin count was, I asked the cashier for a copy of the receipt. She had to do it by hand for some reason, but here it is:

    To calculate how much this should theoretically weight, I need to do a little bit of math. A dollar coin weights in at 8.100g, quarter at 5.670 g, dime at 2.268 g, nickel at 5.000 g and penny at 2.500 g (according to the US Mint)

    This gives us: 5 * 8.100g + 358 * 5.670 g + 987 * 2.268 g + 659 * 5.000 g + 1928 * 2.500 g = 12.423876 kg

    12.423876 kg = 27.3899581 lb.

    That’s about 2.1 lb difference from my original weight. The machine rejected a Chinese coin, two Boston subway tokens and a few coins with gunk on them. The bag probably weights at most 1/2 lb. So it seems that the coin-counting automaton cheated me out of a pound of coins. That’s about 9 bucks by my calculations.

    [Update] I’m told that pre-1982 pennies weight 3.1 grams instead of 2.5, so my calculation is a bit off.

    Of course, my experiment is far from exact. It depends on the number of factors, such as the possibility of my scale being not as precise as I think or the possibility that coins lose some weight after being in circulation. But somehow I highly suspect that the Coinstar machines are undercounting. Wall Street Journal journalist ran an experiment with a remeasured amount of money. I can’t find the original article, but this quote about $87.26 seems to be floating around a lot:

    “For consistency, we began with equal piles of $87.26 worth of pennies, nickels, dimes, and quarters that we had gotten from a local bank in coin envelopes.

    Talk about a tough economy. The machines at both Commerce Bank and Coinstar gave us less back than we put in — Commerce Bank missed by a whopping $7.02, while Coinstar was off by 57 cents.”

    Where is Eliot Spitzer when you need him?

    Ad:


    Health-O-Meter Physician’s Balance Beam Scale: a must have weapon in the battle of the bulge.

    A “rogue” (read “somewhat sloppy, but very interesting”) economist tries to answer tough questions, such as: What do schoolteachers and Sumo wrestlers have in common? How is Ku Klux Klan like a group of real-estate agents? Why do drug dealers still live with their moms? Where have all the criminals gone?

     
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