Mikado
I interested about tomato Mikado too. This tomato may be planted in all Czechoslovakia between world wars. Czechoslovakia from 1919 to 1939 = Bohemia+ Moravia+ Slovakia+ Undercarpatien Russia.
May be- Mikado planted in Undercarpatien Russia (Užhorod, Mukačevo)
After second world war Undercarptien Russia was agreggated to CCCP (Ukraine).
And I think, that this tomato
http://www.violet.kiev.ua/products/2567 is sought Mikado.
Vladimír
PS.: Efisakov is from Ukraine?