[Leica] 135 Hektor question

[mstoesz at wyoming.com (Mike Stoesz)]

Good day;

I have recently acquired a third 135mm f/4.5 Hektor and have some 
questions about the lenses.

Number 1 is --- #1385790 Leica M-mount, all black lettering on 
distance scale to 300 ft then infinity, Ernst Leitz GmbH Wetzlar, 
f=13.5cm 1:4.5, focus line up with black dot with "R" engraved nearby, 
tripod mount with 3/8 hole and 1/4 adapter.

Number 2 is --- #1737667 Leica M-mount, black and red lettering on 
distance scale to 100 ft then infinity, HEKTOR 1:4.5/135 LEITZ 
WETZLAR, no "r" on focus index, tripod mount with 1/4 and 3/8 holes.

Number 3 is --- #854633 Short mount for Visoflex, all brushed chrome 
with black lettering, Hektor f=13.5cm 1:4.5 Ernst Leitz Wetzlar.

Is there any appreciable difference between these three lenses in 
design, performance, desireability, or any other factor?

I have the 135 short mount Hektor on a Viso II on an M-1, works great.

Thanks, Mike