111g, MFD = 0.9m, filter size = ∅40.5mm, Contax RF mount
1,614 lenses were made from 1946 to 1951. multi-coating
$600 @2016, it came with Zeiss Ikon Stuttgart UV filter,
but this filter causes mechanical vignetting to the image.

T coating is MC, but coatings on inside elements are fragile easily wiped out
by touching, so you better be careful not to touch the surface of elements
when you ever have to disassemble it.