[familytoad]

My vote is the York Caramels from 1927. (Type1)
E210-1 features Loads of HOFers, plus the small black & white photos are very representative of the era (look at the cool period writing on the back about each player, which very few other sets offer)
Only 60 cards in the base Type 1, but a few minor variations if you are into that sort of thing.

Also, if you feel crazy, you can go after Type 2 which are 1928, features several unique players (including Gehrig ) but are much harder to find...