Not a US mint die-for certain. But is it for counterfeiting? What else could it be for. Very, very interesting piece. If I owned it, I would keep in in my desk drawer and only show it to numismatists that I trusted and that would have an appreciation for something so exotic. I wouldn't try publically selling it. if it comes to the attention of the secret Service, it is sure to be confiscated with no restitution to the owner.
You have what appears to be a transfer die for counterfeiting a 1956 Roosevelt Dime. Others have raised the possibility that this is a casting die. It is not. A casting die would possess a sprue (or runner) to supply the molten metal, a gate for the entry of metal to fill the cavity, and a vent for excess material to exit from it, which this tool does not. A transfer die requires none of the three features mentioned above. It requires only the design details of the coin itself. A genuine die from the US Mint would: Possess more and sharper design details than your tool does; Not exhibit a depression in the tool where the rim of the coin used was pressed into the tool, which this coin does. Thus, the term "transfer die"; Be made from a round piece of bar stock with one or more alignment flats on it, and not exhibit such an elaborate keying system for alignment in the press; Not exhibit the extruded edges on the back of the die, which indicated that it was a pressed tool, rather than a machined one). As suggested elsewhere, you are heartily advised not to sell this tool until you have checked with authorities who have jurisdiction over the counterfeiting of US coinage. That would be either the Department of the Treasury or the US Secret Service.
Enlightening and troubling. As much of a curiosity as a potential liability. As some have said a definate curio piece. Finding it in a pile of junk, and refinding it in my own junk. Seems it may safer to return it to the junk pile. Plenty to think about, i work nights, so ill check back later tonite. Thanks everyone.
What ever production process this is used in one thing is for sure, it is part of a master insert die where many configurations are easily swapped in and out of the mold to produce likely many different configurations, ie date/ denominations.
This information, begs, more questions. To make a decision, was there a market or suspected amount of fake coins of this year. This curio may be useless to me, im sure there is a side market of curio collectors, but i have no friends in numismatics. Could this curio be used to identify fake coins?
Interesting question. If there are die cracks, breaks, or other imperfections on the die then it might be possible to match coin with die, but I'm honestly not really sure how that all works.
Looking closely at the die face and edge im sure identifiers could be picked out. Like the mark by the bridge of the nose and the ridge pattern on the edge of the coin. I used to work with tool and die makers. I had found this in a old tool box that was left after a retirement. If it was possibly a curio made by a numismatic collector and tool and die maker as a hobby . That would be one thing but if it was used to make fakes. As others have said this is a rare or unique tool. But a unpopular item. If it had been used to make fakes i would probably turn it over so they could be identified.
I'm not sure if this is legal, but could you use the die to cast a pot metal coin just to see how it would have turned out? Would only be one sided, but would be neat to see how detailed the possible fakes could have been.
From how the die feels and the shape. Others have noted it fits to a pressure die with a reverse mate. Its a transfer die made from copying a coin. Not by cutting a die. The face looks like it would make a hi grade circulated coin copy. Not a mint or other very hi quality. As the picture shows it has some surface oxidation. Cleaning it up to try a test would be problimatic. At least the condition shows i have never used it to try to make a coin.
Really interesting piece. But, I wonder why they would take all the trouble to make this for a dime? Was there a rare dime that year that matches this die? Got me thinking, maybe they used it to create fake mint error dimes, using real dimes? Such as double strikes or struck through?
A dime was quite a bit of money in 1956. Additionally, who would expect to see counterfeit dimes? There was a rash of nickel counterfeiting around the same time.