Yes definitely it was!
A common acquaintance of Chuck and me once told me that Chuck was kind of struck by the 510.523 while he was driving: he already owned it but found it 'rather plain', when all of sudden it became one of his favourites.
And I've said it already but I will for ever happy to repeat it: till I got to Chuck's documents, I was happy enough with my run-of-the-mill Speedy Moonwatch.
Then it all began: the Heuers, the L5100 etc. And glad it's happened!

Chuck we miss you indeed!

Cheers,
Fabrizio