The extension knob is for automats pre 1954? If so I want it. Peter Nebergall On Fri, 25 Apr 2008 15:58:51 -0400 "Jerry Laderberg" <jerry@xxxxxxxxxxx> writes: Rollei extension focusing knob. Really handy for shooting f3.5 /2.8 Automats made prior to c.1954. $ 30 PP(U.S.). " extension focusing hood". This is the brown leather folding version that has a pair of oculars. Very attractive and effective, as well as collectible. Exc. $ 85 plus postage. Jerry Laderberg jerry@xxxxxxxxxxx