5 thicknesses of 24mm discs?
if you have a dial caliper, the thicknesses would also be useful.
how do you know they are coin planchets and not some other type of industrial componant?
Jamais l'or n'a perdu la plus petite occasion de se montrer stupide. -Balzac
you can search the Numista catalog (search coins | advanced search)
enter 24mm in DIA, and 6.5 in weight 39 search results
repeat for each weight.
not a commonly used module.
Jamais l'or n'a perdu la plus petite occasion de se montrer stupide. -Balzac
There were no matches in the search for any of the blanks.
I cannot think of any non-coinage industrial application for the bronze alloy - in 24mm diameter blank format.
They have the same look - including edges - as type one blanks.
They look exactly like the color of older bronze Lincoln cents, so I am quite sure they are bronze alloy.
I have the Krause catalog - 2002 - 29th ed. (pre 2000 coins) but it doesn't give diameters or weights.
Do you know if the later editions of the Krause pre-2000 catalogs include diameter and weight specs ?
If you have any other suggestions, please let me know. Thank you, TC
Citeer: "tcmusic11"I have the Krause catalog - 2002 - 29th ed. (pre 2000 coins) but it doesn't give diameters or weights.
Do you know if the later editions of the Krause pre-2000 catalogs include diameter and weight specs ?
I don't know exactly when Krause started adding diameter and weight specs (in the 2006 - 33rd edition it still isn't) but the latest editions of Krause do mention these specs for most of the coins.
I don't know how that's going to help for your blanks though.
Not every round piece of metal is (ment to be) a coin.
Very likely it are leftovers after some perforating proces, or pieces used to blind a pipe or nipple.
It is also possible that they are unfinished products, like hand-wheels, or small gears or indeed coins..
They can even be freezing-plugs.
I dare to say if there is not any lettering whatsoever, it is not a coin, at least not a provable one.
Sorry for my farmers english.
