Good day John,
I have been collecting this set for the last 15 years, in the first
years at Sports Cards Show and recently in high PSA grade. Why this set?
Certainly not because of its eye appeal! It's probably for some, the
ugliest set ever printed. But it's the first year I was buying cards
at the corner store of my neighborhood.
73-74' OPC cards were printed on two different types of carton:
LB: Light Back
DB: Dark Back
Dark Back command a premium because a few collectors consider LB and DB
as two different cards AND the Dark Back carton has weaker physical
properties than the Ligh Back carton. There was way much more cards
printed on the Light carton sheet. I believe when they ran out of it,
they used Dark carton sheet although I would need confirmation on this
theory.
I do not collect the two version but I appreciate having a few DB in
my set. If I had a choice between a set made of LB vs DB in similar grade,
I would easely pay 50% more for the DB.
Have a nice day!