I recently picked up a Telecaster in a trade that the serial number indicates as a "late 77-early 78" guitar. It's been great, and I got a deal because it ha a non-standard 6-saddle bridge, a mystery bridge pickup and a couple of other mods. Nothing irreversible, and I was fine with the 6-saddle bridge, but I was breaking more strings than usual, so I picked up a Fender 3-saddle replacement bridge and some compensated saddles. I dug into it last night and while I had the bridge off was interested to see that the pickup is a Kent Armstrong, one of the Korean made ones, and it sounds great, so it will stay put. I also pulled the neck to see if anything was stamped there, and it looks like '82, which also fits the serial number style. A good example of how things sat around on the shelves in Fullerton. So after a surprisingly easy set up, the thing is about 50% brighter! An absolute jangly twang monster.