The P1 looks good, the other two have rust on them.
I recently got lucky on a package deal for a P1 (which was all I wanted) and a Benjamin Trail NP Pistol (which I knew nothing about). Both were listed as for parts or not working, but the seller stated he got them from an estate, didn't know anything about airguns, and hadn't tested them.
The P1 is an early model (pre lawyerese) and appeared to not have been shot much. I cracked it open to see that the grease had dried out, so I took it apart and re-lubed. Couldn't see any wear on the internal parts at all. Shoots really well.
The Benjamin pistol also appeared not to have been shot much, but this model was famous for a poor lockup. I could gain 100fps just by holding the barrel up when firing through my chronograph. I fixed the lock up with a much stouter piston latch spring. Yesterday I tried to order new seals from Crossman/Benjamin, but someone had just cleaned them out of piston seals, and they won't have any more until end of April.
It will be interesting to see what the above group sell for.