Vintage Montblanc Meisterstück No. 149 Piston unit housing. This part is in good condition. The threads are fully intact and functional. This piston housing is a genuine Montblanc 149 fountain pen part that was likely produced sometime between 1975 and 1990. This part will work on pens from that similar era. Comes with trim ring.

PISTON UNIT HOUSING ONLY - This is not a complete pen.