I recently purchased a box of glass slides and metal binders, also in the box were some very thin frames that when folded were the size of the the metal binder. I am trying to date them and determine how these were used back in the day. thanks so much for your help
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3Some photo(s) may help– Romeo NinovMar 8, 2022 at 12:45
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1Impossible to help without photos.– Digital LightcraftMar 9, 2022 at 9:24
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