The Wilton magnet hadn't been turned on for a while, so I fired it up and reeled in an NOS 450S yesterday. It appears completely unused. The slide still had the packing grease on it and there isn't a mark on it anywhere...jaws, slide, jaw supports, anvil etc...not a mark. I flipped it upside down and the swivel base appears to never have moved. One of the swivel locks is seized, so I sprayed a little penetrating fluid in there and let it sit over night...we'll see if it needs more, but even if I have to cut it off it's not a big deal. Other than light surface rust and the seized swivel lock I can't find anything wrong with it.
The kicker is the seller said his company was getting rid of some excess equipment that wasn't being used so they told the employees they could take anything they wanted from the pile for themselves. I've seen this time and again where companies don't want to bother with having an equipment auction, so they just give it away free to the employees. I'm not sure if it's too much trouble from an accounting standpoint, or they're writing it off for tax purposes, or something else, but it happens a lot.
I think the slide was stamped 2004, so it looks like it's been sitting idle for 13 years.