This appears to be an early Vivitar lens, as it has a preset diaphragm, not an automatic one.
It had a focusing mechanism, therefore not intended for enlarging.
An interesting lens to use on your Leica Screw Body without the need for an adapter.
Unusual Preset Leica-fit lens
Generally very nice condition. Optics are fine.
Front cap present.
******Camera and viewfinder not included in the sale !!! ******
Shipping is from FRANCE.