70's Rolex & Tudor advice please

[FZS1000]

Hello everyone. Thanks for the add.
I have recently been trying to research a couple of watches which I inherited several years ago.
Firstly is a Gentleman's 9ct Gold Rolex, its a very simple design which I like
but seems to have some dust showing inside.
This was my Grandfathers watch and was purchased in 1973
There is reference to movement B468/c and a reference number of 43269

I can't seem to find much info on this model and am wondering if anyone can
help.



Secondly is my late fathers Tudor Monte Carlo 7169/0 with rotating bezel, this was purchased in 1976 and was worn daily by my dad for 30 years ... as
you can see by the condition.
How well could the scratches to the glass be taken out? and failing that how
available are replacements for a watch of this vintage?

Thanks
Ian