[frohme]

Counting variations (e.g. factory, color) there are at least 17 different backs for T205s. If you leave out the factory designations, it may well be possible. There are board members that have studied the set for a long time that may provide specifics to that effect.

I'd hazard a guess that for a specific front pose, you'd certainly not find it with all 17 backs as there appear to be exclusivity rules within certain of the backs. SC Fac 42 for example seems to be either black or red, but not both. Not sure what other patterns there are as I've only been tracking a small subset (14 cards) of the set for about 2 years and have still seen only ~ 1/3 of the (theoretically) possible F/B combos.