The other one needs polishing and a striker and a key made for it. They stopped producing these locks and it is very difficult to find a replacement. 5. . Price - 1 Bargman-Replacement-Lock-Cylinder fits Model L66 or L77 RV Locks-Vintage. 95. 34. Bargman lock L66 L77 Chesler Key CYLINDER PLUG RV Door Latch NOS Vintage New other (see details).