Out of curiosity, ребята, three questions about Иван Васильевич меняет профессию: (a) which currency would Shurik have used when buying transistors (~45 minutes)? I'm assuming he would've used regular rubles if he'd managed to find them in a shop, but since he was buying from a dubious looking source (Бери шинель?) would he have needed other currency? (b) when Иван Грозный discovers the elevator (~24 minutes), is his sign of the cross period, or anachronistic? (c) as for the pen Милославский gives to the ambassador (~1 hour) ... were those available for rubles?