


It was introduced at Watches & Wonders 2014 in Hong Kong. This and its diamond bezel version (Ref. 83520-000r-9909) were exclusive to Asia when they were first introduced, though I don't know how long that exclusivity period is.
The reference number should be engraved on the back of the case, so I'm surprised the sales people could not identify it.
Ref. 83020
Ref. 83520
Cal. 1420
Cal. 1420 is based on Cal. 1400 (VC's first, in-house, designed movement of the modern era). I agree that it looks small in a 40mm diameter case.
We can look at specific movements from the different brands, but I do not agree that it is a step below others in terms of movement finishing.

