If he's giving a date of 1935 as you mentioned, yet theres no markings, no motto etc he probably hasnt a clue what he's on about.
Why no maker marks who knows, they do turn up in what looks to be period issue pieces (could they have been made up post war from original parts) Where they made and liberated from a factory before finished?
Personally unless it was cheap i've never seen the appeal of an unmarked one myself, if the price is in the normal range, i'd go for a marked one everytime.