Classic ultra-compact 40mm Leica lens - M-Mount
$400 (including Paypal fees and shipping to CONUS addresses)
Good vintage condition. German-made version.
Aperture and focus are smooth and precise. Glass is in pretty good shape; no scratches, but there's quite of bit of internal dust (doesn't seem to affect anything.) Includes original, rare, collapsing rubber lens hood, snap-on front cap and Leica rear cap. (I'll also throw in a no-name M-to-E-mount convertor if you want to use it on a Sony.)