Purchased by myself as a photographic resale item because it was a Usable

ITEM: Huge collection of D-Mount m15 lenses coming see my other items= Strange SOM BERTHIOT of FRANCE 13mm F:1.9 with the NO helicoil and odd shaped 8 blade aperture that creates wild BOKEH.

MECHANICALLY: Good aperture of 8 scalloped shaped blades, NO= helicoil focus from infinity to ? . satin Chrome , bi-metals & brass high quality build, like a tank, , weighs 1 oz. To use on Dmt. adapter buy on eBay for Dmt. to Pentax Q, very cheaply w/ free shipping. aperture turn correctly. from lens flange 25Lx28mmW.................... hefty

. OPTICALLY: Optics have NO dust, or haze or fungus; look crystal clear with 5x loop, coated unscratched and clear. Amazing WILD BOKEH possible

NOTE: EBAY LOST ALL MY 13MM D MT ADS! if you see a lens you would like contact me please.