All the caps are used and have minor marks on them. cat# if I have it. By size: #14289 E55, these all R lenses. 28f2.8/35f2.8/35f2/50f2/50f1.4/60f2.8/90f2/100f4 Some earlier versions of these lenses use different caps. $15.00 #11252 39mm, looks like it fits on a reversed or rubber hood as for the CL w/rubber hood..Out side diameter of the clips measures 39mm $15.00 This one fits a reversed 39mm hood like the 12585. Has notches for the clips. No cat # $15.00 Plastic front cap, 49mm inside diameter likely for a lens with 48mm filter size(Thambar, 28 Elmarit?). It does fit a Canon GIII 17 which uses 48mm filters. $25.00 Earlier 39mm satin finish metal cap, early style. Missing velvet friction material and has some small dents above "Leica" $40.00 Early black paint over brass., front cap measures 45mmID 49mmOD. I didn't find a lens with a 45mm filter size in the Leica accessory guide. So, what's it for? Beats me, Must be RARE? Right? $40.00 All prices include shipping to US addresses. International at actual cost. PP fees included.