Hi Peval65, re your question on the brass turret assembly - some were chemically blacked & some were painted. Off the top of my head I can't remember for certain if all Watson Mk2's were chemically done or painted, though speaking from memory I think they were painted with black enamel type paint.
Maybe one of the other forummers could help with the correct name to describe the exact shade of green that the scope tins were originally painted? I can recognise it but I couldn't describe it accurately for you!