A new date line in 1 Kopeck from 1916 [solved]

Hello everyone,

I noticed that the proof version of the 1916 1 Kopeck (A) from Berlin is missing ( .

N#2081 ) While it is not listed in catalogues, you can see a sales record here. It's also possible to verify this coin through NGC.

https://onebid.pl/pl/monety-rrr-1-kopiejka-1916-ost-lustrzanka/264517

Line was added. I just wonder, how many of these Proofs went unnoticed, given how easily these coins degrade. 

Jarcek

Line was added. I just wonder, how many of these Proofs went unnoticed, given how easily these coins degrade. 

Thank you for adding the date line! That's a good question. I only found a proof 1 Kopeek online, but I don't believe that they only minted this denomination.