Amazing what’s around, I’m sure a lot of these old watch makers just do their job and don’t really fuss themselves with values or price increases.
Those Sub tritium bezels are worth a pretty penny, any tritium hands he has replaced and kept will be good money too along with any dials, especially matt dials.
Lots of GMT bezels were swapped when they faded or turned to a fushia colour, these now can be serious money!!