The only standard sheets I could find are either 9 pocket designed for baseball cards (pocket is too small) or the 4 pocket postcard size. It would take 125 of then to hold 1000 102 cards which can be stuffed into a basic red box (800 with more comfort).

You can go cheap with the very thin BCW ones or the nicer, sturdier and more expensive ones from the normal philatelic supply sources. I lean towards Lindner at the moment but they all have their cheerleaders.

 
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Brooklyn Gallery sells both single- and double-sided versions of the pages for 102 cards.

Dale

 
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