Center Stand Vespa 50 R smallframe

Hi!

I am currently restoring for my elder's son Dylan a Vespa Smallframe 50 R from 1972.

I am replacing the damaged centre stand with a new one and discovered the distance between the brackets seems to be smaller than the ones I can find on the web. I tried article n. 44010000 (Centre stand RMS for Vespa - see attached picture) and the distance in between the brackets is wider and the legs slightly longer. 

The original stand I have is diameter 20 mm and distance in between brackets (measure from the centre of each bracket) is 165 mm. The legs are also slightly shorter.

Has anyone had that problem in the past and does a new stand with those dimensions exist?

Thanks!! Simon