Your set is about a 1927 Leedy with a Professional snare. I recently sold a newer 1930's version with a near mint windmill head, all chrome hardware, solid maple shell Broadway snare drum, temple blocks, three toms, bells, whistles etc, for $2000. The sparkling gold finish is more desirable than white marine but the 1930's Leedy snare drums are more sought after usually, due to the more modern and reliable lugs. Hope this gives you some reference.
Leedy did not start stamping dates inside their shells until around 1936, so there probably won't be a date stamp inside.
P.S. The gold color of Leedy hardware is not "Artgold". That was Slingerland's term for it. Leedy's was called "Nobby Gold", whatever that means.
[IMG]http://www.coopersvintagedrums.com/windmillset966.jpg[/IMG]
