Exact size of the compressor crowns on 1964 Sherpa Jet MKI?

[Trancewidth]

Hello - yes, I got bit by the Enicar bug over the past couple of years, living in the foothills of the Himalayas helped.

I have an early MK 1 Sherpa Jet that has an incorrect crown - I see several available on eBay and elsewhere - but what is the correct size of these?

Thanks!

 

[ZWesty]

My Sherpa Jet Mk2 (148-35-02) crowns are cross hatched with a Diameter 6.3mm x Length 4.1mm

The crowns look shorter on Mk1s when viewing images online, maybe 6.3mm x 3.1mm?

 

[Trancewidth]

I’m going to attempt to measure, but I have an old style mm gauge

 

[Trancewidth]

This is ref# 146/002 Jet

 

[Trancewidth]

Thank you to all. The watch is now in the capable hands of Mat at Horology Biology for service and a new crown. Can’t wait to see it in super fresh condition!