Thanks for the reply. Man, now you've got me really geeked out. Found a steel ball bearing and then gave the plate a quick blocking with some 80 grit to remove years of dust and filth and lo and behold it bounced. It bounced higher than the height at which it was dropped and just kept on bouncing until it fell off. I really hope this is a good thing as I really have no need for a paper weight of this stature.
As for weighing it, that's a negative Ghost Rider. I can barely move it let alone lift it and I have two herniated disks from lifting heavy shit already. I seriously doubt my bathroom scale could handle it without squishing into a million bits of Chinese bathroom scale. I have a 2 ton gantry so I think I'll ask around (TPAAAT ) to see if anyone I know has a scale for a crane. I'm usually the guy who has two of everything so you know I'll be on the lookout for one now.
Question... Should I sand blast this thing to clean it up? I live right next to the ocean and old iron can flake pretty good if not kept well. This one isn't bad at all but I was curious.