sigistenz Posted July 21, 2020 Report Share Posted July 21, 2020 The pits in the field is not corrosion - according to Mr Сергей Старовойт, author of Сибирская Монета 1766-1781, they are not uncommon for early uneven flans (1766, 1767). See close up below. Quote Link to comment Share on other sites More sharing options...
squirrel Posted July 21, 2020 Report Share Posted July 21, 2020 That looks like the result of flaws in the copper from too much cooling from furnace to the next process. It must have been very cold in Siberia that day. (What are the odds?) Very cool overdate ☺️ Quote Link to comment Share on other sites More sharing options...
sigistenz Posted July 21, 2020 Author Report Share Posted July 21, 2020 Very interesting theory I know too little of coin production at the time. Maybe the planchet was so uneven that striking did not flatten it smooth ? What counts for me is that the coin's appearance is natural - not caused by heavy corrosion. Not a beauty but interesting. Sigi Quote Link to comment Share on other sites More sharing options...
extant4cell Posted July 22, 2020 Report Share Posted July 22, 2020 Very nice one! Early KM and early TM coins have similar problems... Quote Link to comment Share on other sites More sharing options...
alexbq2 Posted July 23, 2020 Report Share Posted July 23, 2020 I was thinking that about the Crimean Kyrmis coins Quote Link to comment Share on other sites More sharing options...
extant4cell Posted July 23, 2020 Report Share Posted July 23, 2020 Which makes Sigi's coin as authentic as it can get. Quote Link to comment Share on other sites More sharing options...
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