When you have or had many Vintage guitar's pass threw your hands and in your shop now. I can tell what year the screws are within a few years.. Not exact year.. :O)
1950's with no threads to top Philips head oval Nickle Screws.
The pictures of the 100% 52 Tele is my buddies. Well he's trying to sell it to me. Just shy of 30 large..:)