1st Series Variations
2nd Series Variations
Wacky Packages Variations 1st/2nd Series
Horizontal Doubles Tan Backs
Doubles are a combination of
There are 18 different doubles.
Six are strictly 1st series.
Seven are strictly 2nd series.
Five are mixed 1st/2nd series.
Tan Back Doubles are numbered out of 5 (rare).
You can't just cut these in half and have two single tans, since
are individually numbered out of 10.