Pair of Negative Strip & Positive Slide Carriers Tray Holder for Unknown Scanner

Description

Up For Sale is a Pair of Negative Strip & Positive Slide Carriers Tray Holder for Unknown Scanner
These came with a box of mixed computer equipment
The box also had a Nikon LS-4000, but these obviously don't work with that model
No real markings on them, and an image search is ineffective
They don't feel like holders for those scanners, and are probably for a professional model from the late 90's to the early 2000's
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