I just picked this amp from a guy who I've interacted with for years on another non-guitar related forum. Evidently he bought it as a teenager around 83 and quit playing after a few years, so it's sat in a closet since. He said it had a noticable hum and was scratchy, so I got it with the understanding it needs work. He told me his research at the time told him it was a 72. After a couple months I was finally able to meet him Saturday to complete the transaction. He didn't have a decent cable, so I couldn't tell if was the cable or amp that sounded scratchy, the hum was apparent. Obviously the speaker was replaced with a Muscle Magnet at some point. I did notice the drip edge. Sunday I got to my Dad's house (I live in another state), and decided to look into it myself a little before taking it to a tech. 1st thing I notice is the power tubes are mismatched, and it appears to have the wrong tube in the rectifier. The mismatched 6v6's So I pulled the chassis and sprayed some electronics cleaner in the pots, tightened a couple of obviously loose things and put her back together. Plugged it in and it was 90% perfect. Still a slight hum, reverb won't engage, and I have to turn the Intensity knob way up to have it noticable. Otherwise it sounds amazing. Here's a couple clips. The 1st is just to show how clean it is, the 2nd is jamming with my Dad. The PR is the louder and soloing amp. https://m.soundcloud.com/racer5/audio-recording-2016-01-17-14/s-GRzyf https://m.soundcloud.com/racer5/audio-recording-2016-01-17-15/s-ulqag I played it a lot yesterday and by last night it developed a slight rattle. I have an old friend who's an amp tech here in town, I'm gonna take it to him to look over today but I think I'm gonna replace all the tubes and see what happens before doing anything else. So I emailed the guy and told him it seems to need way less work than anticipated when we agreed to extremely favorable terms and offered him more money. He said he just hopes I enjoy it and he's glad it's getting used. I'm thinking this is an extremely early Drip Edge since it has the same tube allotment as the late Blackfaces, but I need to research more. I'm not too versed in all that. I appreciate any inside any of you have into either the model, or functionality, of this amp.