Hello, I'm looking for information about a "SP" logo on some microsplit stopwatches case. This logo is usually followed by a serial number starting with "C". it's maybe a US compagny who made a big order to HEUER and requested to print its logo ont he device. I think to spindustries whick looks to be an old laboratory material manufacturer. Regards
Interesting question. I can see this has been asked before but with no answer. Normally, the 'C number' indicates it is destined for sale within Switzerland, so may have no bearing on the logo itself. I did find a note saying one was produced by 'TAG Heuer - Made for SP (Scientific Products). Maybe that is a starting point? Steve