Thermoplan 40500.1556 FIX PISTON , ASSEMBLY.
Looks to be in good pre-owned condition. I found a large box of espresso parts a couple months ago while thrifting. Some parts were new, some were pre-owned. I included the parts list and diagram from the Mastrena manual that were in the box. 100% authentic and originally came straight from the manufacturer. Online retail price from the Thermoplan parts website is $1254.00 brand new and is currently out of stock. I’m offering this part at a fair price considering it being pre-owned.