That trap is old - owned by my 60 year old relative's father. The trap may be 50-60 years old and much used. Still works though.
ewest, if it's a 330, they were introduced in the mid to late 60's. You could boil them in walnut husks, or dip them in speed dip. That will help limit the rust. Whatever you do DON'T wax 'em. I did that to a bunch of 110's after I dipped them, and had to get the wax off of the dog and the trigger. They wanted to go off by themselves, or with any slight jar, usually snapping shut before I could get them in place.
