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From his history it seems he was still in school into '71. It seems that his function was to test amps. Maybe he had a summer job or internship while still in school.

His stamp includes the title of electrical engineer. I have had US export amps with his stamp.

I just realized I misread the serial number as 5229A instead of 8229A which puts it in TAZIN's date range during the short period amps were inspected by the seemingly very "pretentious" ;) Claude Venet.

The metal panel Tremolo 50s had a T / A prefix right from the start.

I can help a little here. '69 ended at around 4100A. This one should be from around March 1970. It doesn't seem like this would have originally been a "born together" stack though the bottoms may have been a pair from the beginning. I didn't see enough to date the speakers to confirm.

This '74 has an 820. I think the fat cap use really relates to the level of voltage fed to the preamp. You may remember the 12XXX series I posted pictures of with a 250uf modern Phillips can across the 820. Voltage at pin 1 is about 185 volts on that amp and it does clean up great. The fat...

I can add a bit on the V2 bypass cap as I have been sorting out a friends '74 1987 lately. I believe that amps from '73-'75 or later had low voltage with a lot of distortion. This particular amp is about 385V. It has 2 10K dropping resistors. voltage at V1, pin 1 was 105V which is low...

V4 tube socket changed for sure. Tubes are just Valve Arts for now. I will do some recording with it and see how it goes! Big with clean saturation. I wonder if the previous owner, Clive Brown of Ripon could shed light on it's history.

Here's one of my "biggies" that I have had since 1989. I haven't played it in few years so of course it needed to be brought up very slowly and the lightbulb too. Just needed the first cathode cap, otherwise all clear. Regulating the voltage to 115 I got to 565 volts as the heaters reached...

The feet would have been this variety. They turn up every now and then. Our member, Bygone Tones sometimes has them.

I have a low number 12XXX series with D7s and A8s for mustards. I wouldn't be surprised if those 104XXs might have predated the the 12s. I believe these early Dagnall amps used carry-over chassis from the Drake era. I find it interesting that the pre-Dagnall chassis had a filter spacer next...

This one in the Hamer Ad was a later one probably well into '67. I sold it 40 years ago to Jol at Hamer where it appeared in this ad soon after. These weren't too well known over here back then. I think he may have hoped it was a Bluesbreaker. I remember EL84s didn't last long and probably...

That makes sense.

I have a Super Trem from the same time period as Travis'. Mine also has the narrow power cap board with the caps vertically mounted. Mine may be even a tad earlier since it has the Bulgin port and window serial number. I believe Paul K was using a '67 3 switch 100W with Free. I recall seeing...

They both look like the later green/black. The in between has a faint round pebble pattern.

They have modern sockets that are oriented vertically and fit without chassis modification though the socket itself will require a little shaving to fit.

It is interesting that is has a polarity switch, so possibly an early export amp. The font on that "104" portion of the serial number doesn't look quite right to me. They sometimes put the serial number on the tag during this period, 10308 in this case which is the serial number range I would...

...well, it's autographed so it has to be legit!

No. This has the stuff they used between the smooth and the green / black levant.

Does yours have that rare "pebble" tolex that was used for very short time?