This is one my favourite pieces of photography gear, a “Seneca NoSlip” splt-back contact printing frame from the early twentieth century. I use this device to sandwich my negatives with paper coated with either Cyanotype or Van Dyke Brown chemistry. The term split-back refers to the ability to unfold part of the back to check on the exposure, while the paper is still held securely in place; this feature is crucial for the kind of prints I am doing.
In addition to its utility, I like the rich colour of the wood, and the patina of the brass fittings; it exudes history and tradition in a way only an analog device can.

I recently aquired one of these and thought it was just a picture frame. Any idea of it’s value?
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I’m not sure they have much value as a collectible; I got this one for about $20, and I bought it to put it to work.
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