Hello Everyone. I have a Maria Theresa Thaler (MTT) that appears to be an unstruck planchet error. Here are some specific details for the coin I have: Weight: 28.10 grams Diameter: 39.0mm Thickness: 2.5mm Edge Lettering: See Photo Below Purity: Sigma Metalytics Precious Metal Verifier shows purity similar to a genuine MTT. This was recently found in a batch of foreign coins that I have had for several years. I am looking for more information on this piece in regards to the following: Authenticity? Are other examples of this error known for this coin? Possible Value? Any other information is greatly appreciated. Below are photos of the item along with a genuine MTT for comparison. Obverses: Reverses: Error Example Obverse: Error Example Reverse: Edge Lettering (Error Example on Top) Thank You.
I'm not sure about it because I'm not familiar with these. But I know they have tons of restrikes. The question is, were the lettered edges put on first then coin struck? Looks as though the unstruck one is thinner diameter wise. Maybe it gains a couple millimeters after striking? But, if the letters are obtained after/while striking, I don't see how the planchet could be smaller after being struck. Looks convincing to me, but I'm not expert.
Looks good to me - my understanding is that the edges were rolled prior to striking. Also, as for the diameter discrepancy, the flan would expand outward when struck between dies. I strongly suspect that this is a planchet from one of the 20th century restrikes, but I think a Haffner catalog would be needed to confirm this. A very interesting piece - I believe I have seen another, but years ago, and my memory of the context is very hazy.
@Joshua Lemons @norantyki @Rick Stachowski Thank you everyone for the information. I believe the edge lettering was added in a similar way to how edge lettering on US presidential dollars are. If anyone understands this process better, I would appreciate some information. I am still looking for any other information that may help understand this piece more. Thank You.
I was looking at Maria Theresa Thalers on Heritage Auctions and ran across another MTT Error. It was sold only two days ago. It is an off-center piece where the unstruck portions show a similar edge effect to the blank example that I have above. The off-center piece that sold was part of the 2023 June 12 Error Coinage US Coins Showcase Auction #60323 for Heritage Auctions. I am attaching an image of the item and auction results below. A direct link will also be included as well. https://coins.ha.com/itm/errors/178...a/60323-51651.s?ic4=ListView-Thumbnail-071515 While this is an example of an off-center MTT (and graded AU58), does anyone have a formula to estimate what the value of a blank example might bring? As always, any information is greatly appreciated. Thank You.
Very difficult to say - my personal preference is for the off-cantered example, and I believe that dedicated collectors (using the Haffner guide) would also prefer it, as it would allow for a positive attribution. In other words, I think that yours will be worth less than the one sold through HA, but this being said, it is near impossible to say exactly what such specialized material would bring... depends whose in the room / casts eyes on it. As a dealer, off the top of my head, I'd likely slap $125-150 on it and gauge interest. This being said, I am somewhat surprised that the HA example went quite as high as it did.
I have a MTT with edge motto upside down. Is this a common error? Anyone have any information about this? Thanks
