peter_n
Veteran
Nice! Here's a pic from mine:

Leica went all the way with the 50 ASPH. The only APO, ASPH, Shifting element prime I know.
It has an aspherical element, and a shifting group but is not apochromatic.
It has an aspherical element, and a shifting group but is not apochromatic. Not that it matters much.
May I ask whether pre-asph is actually summilux 50mm f1.4 v1? Pardon my ignorance. I am still learning about leica lens.
" v.2 with serial nrs. 1844001-whatever-they-ended-with"
V.2 certainly went as high as 2220523.