Bought this set and there is an error ...one of the coins is placed in the wrong slot anyone know if there worth alot being errored... his is a 36 PIECE 2009 P & D MINT SET ERROR PENNY NICKEL DIME QUARTER HALF DOLLAR SATIN...
I don't really think anybody would pay any more for it because it is not a "coin error" more or less it is just a packaging mistake !
Sorry Boston. Nothing here except bragging rights. Mint packaging errors don't command much in the aftermarket. Especially with fat, cumbersome, obese, dealer types (Lord, I'm sorry. That's just a reference to a thread I recently posted in).
still it's a novelty, worth having, maybe. or put it out there on Ebay, see of you can make a profit (after shipping and 10% fees and plus credit card fee.)
Can anyone provide insight into why several of the Pennsylvania minted 1/2 dollers from the 2009 uncirculated 36pc mint set mesure .15mm less in thickness and have a weight differance of just under 1/10 gram? Many of the Pen. 1/2 dollars also appear to have been struck with noticeably less pressure leading to a flatter appearance that I found nearly impossible to photograph. The thickness differance is visualy notable in the photos I provided. photos can be deceiving as can our eyes which is why I have included the micrometer shots. The stated thickness I have found to be standard, gleaned from several numismatic sites, for this coin is 2.15mm and to the best of my knowledge/reasearch ablility there have been no published changes to the coins dementions since 1970. These 2 coins came from the same 36 coin set. I have found 10 such sets all of which the denver coin unwaveringly measures at 2.15mm thick. Inexplicably, the PA coins vary from 1.98-2.04mm. Thoughts? Best Regards, Matt
First, welcome to the neighborhood, Matt! It would have been better if you had started your own thread since this one is unrelated and more than 6 years old. FWIW, the Mint does have a certain tolerance for the thickness of all of the coin metal rolls that are used to punch blanks from, but I'm not sure exactly what the tolerance is for the half dollar. Chris
I think the tolerances are on the diameter and weight of the coin not on the sheet of rolled metal. Obviously you can't have one without the other but the actual specs are tied to the denomination by statute.
Officially the diameter and weight tolerance are on the coins, but the only way to get that weight tolerance for the coins is by having strict tolerances for the thickness of the strip the blanks are punched from.
Just noticed all the replys, I had started a new thread as recommended and had forgotten about this one. First photo is 10x10 Philadelphia x Denver Not all are .15mm differnt in thickness but I couldn't think of a way to show the difference better with a camera Other than of course the calipers
Which brings me back to my standard statement, thickness of the coin at the rim (which it the only place anyone looks) is a function of striking pressure. The stronger the strike, the better the rim fills and the thicker the coin is as measured from rim to rim.
Can you point out another example from a specific year or set in which One mint predominantly Struck a coin of a certain denomination with a visually discernible difference? I agree with you On edge thickness Methodology I just had never heard such a Variance in the same year and in a set no less. Does anybody else Have 2009 Mint sets That also feature A visual difference in stamping pressure from Denver to Philadelphia?
