So they had a valid claim to use 1860. The switch clearly happened in 1950, when they celebrate their 90th...
After that all their advertising and packaging uses "since 1860".

Could it possibly be related to distinguish from Breitling's "Since 1884" ?

Jurgen

: I've had a hunt around online.. but most of the info is known
: already..

: One site says that in 1860 Ed. Heuer set up shop (we know this),
: and in 1864 he moved to Bienne..
: Maybe that has some bearing on it.

: These dates are kinda arbitrary anyway.. I mean, do you pick a date
: when he first started learning watchmaking.. or when he
: completed a watch, or when he sold a watch, or fixed another
: makers watch!?! Maybe 1864 was 'picked' originally, as he has
: proved his business for 4 yrs, moved to Bienne and could
: rightfully claim 'started in 1864' as a solid, no BS claim.

: This is all guesswork on my part!!

: Stewart
: - Heuerville