No, they're not maker marked.. I've 8 different types, I know of maybe 3 types more, but the only maker marked Summer eagles I've seen are Assmann. Then I've seen a early drooptail marked Steinhauer&L?ck as a logo, but only once and I've seen a similar early one with Juncker mark, but also only once. If I add up all I've seen there're 10/12 types max. , I guess.. I think the heavy early drooptail eagles are the most wonderful eagles there're.., but that's probably because I'm a Summer eagle fan.. Jos.