Frank,
i could see your point....but Chris nailed it......
anything "not" distributed in packs and is hand cut is considered scrap(catagorically speaking)....
even if it has no defect like brown old mill.... brown om is scrap..scrap prob wasn't always thrown away in ever case, prob the nicer examples were taken home that day , or saved and hand cut later as what im thinking what occured w/ brown om....one man's trash is another man's treasure...could a sheet of blank backs been inserted into packs????the probability is highly unlikely since i don't see the printer hand cutting them, then insertion for distribution, just doesn't seem logical...
blank backs are scraps(there are no known examples of blank back t206 that were factory cut)....maybe super accurate ones that "appear" to measure...but all known examples, i repeat, all known t206 blank back are hand cut(true blank backs)
proofs are scraps also(they have the cross-hatches thats all)....
all these cards that are hand cut, were not inserted...but nothing is 100 percent certain in anything.....the probabilty is almost nill that hand cut cards were inserted into packs....all cards posted above weren't inserted into packs, except Titus who i am on the fence with..
Frank you have a ton of experience in cardboard, but i'm obsessed with these little freaks