I have seen two others in person like this one and both were mounted on benches in antique shops. Would like any info anyone may have , searching came up empty. It is cool , quick release
open /close with ratcheting for the final tightening. It is dirty but has no cracks or repairs and works just as it should. Other than a few casting numbers on the different parts there is no name on it.
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Measure 7" wide and opens 8" without the wood pads/inserts. The dog is there as well.