I got an old iron book press off ebay too. I got a decent deal, about $100 in it. The price is high I think because they are some type of antique collectable. Anyhow, mine is very heavy. I'd say close to 75 - 100 pounds. My buddy is a FedEx delivery guy and he was delivering to my area when it came. He left me a dirty note on my door. The guy had this 100 pound press basically floating around in this huge box making it really hard to handle. My buddy had quite the time getting it to my door. Funny stuff.
It works very well for pressing veneers. No problems at all on the edges. I don't know what kind of pressure it creates but it must be pretty good. I can take a piece of paper and stick it barely in the outer edge of the thing and clamp it down and you will rip the paper trying to get it out. The pressure is very even.