Russian RPN calculator series Elektronika MK

[Karl-Ludwig Butte]

(05-23-2019 10:15 PM)rprosperi Wrote:  FYI - Here's an MK-61 just listed; price is $25 and shipping only $15, coming from Ukraine. But it is not risk-free; although it looks virtually new, seller does not know if it's in working condition:

https://www.ebay.com/itm/Mint-Soviet-RPN...3527796511

Thank you for your reply. I doubt that this is an unused unit. I compared it to the one I got from a colleague, who is from Hungary. The right switch of the offered unit is white and looks different compared to the left one which is black. In my unit both are black and from the same type. Or could it be that Elektronika used different switches in production when supplies of one type where not available?

Best regards

Karl