Lovely little thing.
The 2310 is kust a later reference for a further development of the earlier CH27C12 (which itself is simply a reference to the size in mm and the 12 hr capability of the chronograph). This earlier movement didn't last too long before further development.
This watch has had some work. Thankfully the dial is untouched, but the sub-dial hands have been re-coloured, the main hands re-plated, the crown and pushers replced or replated.
Did you source this from the states? It looks like it has a US 3-letter import code stamped onto the movement's balance bridge (Lemania was BOL) and the tachy is marked miles, indicating a non-European sales point (even though a tachy is unit-neutral).
I cannot read what it actually says, can you let me know?
All the best
Dave
If it's Lemania-powered, I'm interested. Tool Chrono - interested. Dive Chrono - interested. Interesting - interested
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