Like most things relating to vintage Rolex, there are no hard-&-fast rules, but, in general, the lume usually has some texture to it. Sometimes, vintage Rolex lume appears puffy & sometimes it appears flat, but, rarely is it smooth - it often looks like it was applied (or gone over) with a nappy paint roller
I agree with you on the flat lug holes. If the lug holes are chamfered (& many are), they got that way after the case left the (Rolex) factory.