They seem to have removed the sold button on the posts...
This is GONE> Original ATE caliper, had this stored for years.
One piston is free, I removed it and checked the piston.
It cleaned up with no pitting using 000 steel wool. Some light rust in the bore also cleaned.
The other 3 pistons are stuck. I sprayed some pb blaster into the brake line holes.
I don't have the correct tool that grabs the pistons from inside for removal.
All 3 bleeders are unstuck and work as they should.
Prefer pickup but can ship in a medium box for 15 extra.