1 & 2 - Newest Meyer type/clutchback
3 & 4 - Previous Meyer type/clutchback
5 - Previous Meyer type/painted/pinback
6 - Wellington/Tokyo/painted/pinback
7 - Ira Green/clutchback/poor quality
8 - First issue - 1925, copper / painted / screwback
9 - Stamped/unmarked/pinback/poor quality
10 - Unmarked pinback/good quality/unauthorized
11 - Unmarked screwback/good quality/unauthorized

From the personal collection of Richard Whitt