Definitely a dry mounting press and if it's working, still worth a few bob as they are still in use in many studios. The device that Andy refers to would be a print dryer/glazer and was a different shape, with a slightly domed top.
Before I retired we had one that sold on eBay for over £300 to a studio in France. Shipping was a similar cost which the buyer sorted out, so it was obviously worth it to him. That was a big one though, for 20" x 16" prints.
regards
Brian