Repairers like David Woods in the UK can supply a restored instrument to that spec without any problem.

http://www.chronometricspeedos.co.uk/

Unfortunately, if you're in Australia then the costs mount up. We're a bit spoiled over here.

If you do decide to send yours off, there is absolutely no problem dealing with the Woods's

Thanks Rik. Yes it would add up. There are a few people in Australia repairing chronos but if all else fails...
The only tricky parts to locate may be the dial and rounded brass bezel.
There is a local guy advertising chrono dials so i will see if he can supply one for a wd speedo.

email (option): meck04@bigpond.com

Hi Earlier this year I bought one from a guy in Malta through Ebay for my 41
Cheers
John

email (option): jsaft1951@xtra.co.nz