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Posted By: Gilbert Maines

And this example applies solely to cards which have been slit in half, correct, Kevin?

Cards which have been seperated by soaking, such as photographic cards for example, which result in the picture having its backing entirely replaced; involves an entirely different diagnostic approach regarding seam identification (because there is none). However, the residual glue inspection would still apply, I guess.

Other than determining that period materials were used, what else would you look for?

Also, applied to all rebacking jobs, is it effective to search for glue with a black light? Or does everyone who does this use old glues which will not flouresce?