Here's a stab at it

Vintage Heuer Discussion Forum

The place for discussing 1930-1985 Heuer wristwatches, chronographs and dash-mounted timepieces. Online since May 2003.

Direct 'for sale' postings, commercial solicitation and ads are allowed only in the Sales Forum, not here in the Discussion Forum.
Policies and administrivia for this forum are covered in the Heuer Forum Policies.
To enhance your postings, learn How To Include Photos and HTML In Your Messages.

Here's a stab at it

With acknowledgement to OTD for the information. Contemporary to 1960 would have been

A Mastertime 3-6-9-12hour clock (preferably double-barrell Revue Thommen Cal 63) and a 3-button ( 2-pusher) Monte Carlo.

I have searched on Google and cannot find a single Jag with a fitted RallyMaster set, even Mille Miglia entries.

The significant issue is probably to include any set of your choice with 13mm deep cases. The 15mm cases did not appear until the late '60's.

Hope this helps.
David

Here's a stab at it

1 wallclock secs ( 0.19 usr + 0.02 sys = 0.21 CPU)