what blank back card are..?

[rufflechipsCards]

i look at OPC 2011-12 and some worth high pric eand they say blank back .... but they really look like at retro one... what is the difference...

[RGM81]

The backs of the cards, as you may suspect, are blank.

[rufflechipsCards]

and they are ... mistake ?? or they are apart of the serie...

[Wickabee]

They're another, fairly rare, parallel.

[RGM81]

and they are ... mistake ?? or they are apart of the serie...

They're a parallel. Short-printed to a serious degree. First year they did them (08-09) UD confirmed the print run to be /15. They haven't announced the print runs in subsequent years unfortunately, but it's believed to be somewhere between 5 and 15.

[Craig2]

I know a couple of years ago it was 1:244, but I'm not sure about 2010 or 2011.

I think 5-15 is a good guess.

[rufflechipsCards]

does it exist site where we can see which card in teh serie that have the lowest number of print and etc... ? the list of all the card of the collection ? short print parallel retro rainbow... and etc

[RGM81]

The SCF Inventory has every card from O-Pee-Chee listed, along with know print runs.

[joshpackham]

if buying blank backs make sure that it isn't one of the box bottom blank backs as some sellers have just cut up the box bottoms and have been selling them as blank back

[Wickabee]

if buying blank backs make sure that it isn't one of the box bottom blank backs as some sellers have just cut up the box bottoms and have been selling them as blank back

I was wondering about that. Is there any real way to tell?