[Goudey77]

I did some research and could not find a sound answer. It appears the 1968 Topps 3-D cards are condition sensitive as in the plastic coating could potentially crack.

Can anyone confirm or deny this? How brittle are we talking? Weather/temperature sensitive? Handling instructions?

I'm thinking about grabbing a few for my personal collection but would like some feedback from those who have first hand knowledge.

Thank you in advance.