The following model numbers are from Larry Bunker's "polished maple" Gretsch set (12/16/20) which he played in '64-'65 with the second Bill Evans trio. This could be one of the earliest maple finished Gretsch sets as they were only available to their artists and not the general public.
BD 14x20 X4249
FT 16x16 X4408
TT 8x12 X4405