$200K 1963 JTM45 One Of 6 Prototypes

[BygoneTones]

I wonder if this amp's origins can traced to Musicground at any point?

Strong contender in my opinion. Maybe rolled off the production line in Doncaster a few weeks ago.

 

[Ned B]

I guess one could say that off-set chassis 45s aren't as rare as they used to be...

 

[playloud]

Does anyone have uncorrupted pics of the amp discussed in this old Metro Forum thread? It might be interesting to compare.

Some might say that fake Marshalls are the worst thing the Harrisons have unleashed on the world, but there is some competition: https://en.wikipedia.org/wiki/Yungblud

 

[neikeel]

It’s ok
Quite a few points made above are incorrect, some ok - but for the wrong reasons.
Alloy chassis, look at the fixing points
7-hole board points - correct
Resistor type - some are correct for 64 production.
Why those coupling caps?
Offsets had grey RS paper type (I’ve got a box full) mounted in a specific way.
Heaters varied
Polarity switch ok
Front panel - too new
Jacks always enclosed - just early type.
Pots wiring ok for 64/65 period
Lamp likely wrong
Need better pics of switches but I think that they are wrong too.
PT would work - no reason for selector on top (the mk1 RS self lead would tho’)
Reminds me of the MG and Plexipalace lash ups of 20-30 years ago and the Kronomeyer collection (some ok some not).
There are other things too that call foul.

 

[AndyD]

Does anyone have uncorrupted pics of the amp discussed in this old Metro Forum thread? It might be interesting to compare.

Some might say that fake Marshalls are the worst thing the Harrisons have unleashed on the world, but there is some competition: https://en.wikipedia.org/wiki/Yungblud

Ouch!!!!

 

[playloud]

Offsets had grey RS paper type (I’ve got a box full) mounted in a specific way.

Ah yes - I forgot you opened one of those up!

 

[ljs]

Strong contender in my opinion. Maybe rolled off the production line in Doncaster a few weeks ago.

They’re still at it? Not sure why they’d stop but I’m the naive kind… I was hoping we got rid of them

 

[CptZar]

Kronemeyer is a good guess. Also Plexi Palace, they loved the polished chassis.
About Gruhn...I wonder how many folks have been cheated with an online Gruhn appraisal.

 

[C-Man]

It’s ok
Quite a few points made above are incorrect, some ok - but for the wrong reasons.
Alloy chassis, look at the fixing points
7-hole board points - correct
Resistor type - some are correct for 64 production.
Why those coupling caps?
Offsets had grey RS paper type (I’ve got a box full) mounted in a specific way.
Heaters varied
Polarity switch ok
Front panel - too new
Jacks always enclosed - just early type.
Pots wiring ok for 64/65 period
Lamp likely wrong
Need better pics of switches but I think that they are wrong too.
PT would work - no reason for selector on top (the mk1 RS self lead would tho’)
Reminds me of the MG and Plexipalace lash ups of 20-30 years ago and the Kronomeyer collection (some ok some not).
There are other things too that call foul.

Not to detract from this thread. I have been looking for those grey and blue RS paper type capacitors for a very very long time. If you have some you'd be willing to part with please let me know. I have a few, but they are in the wrong values which is more common. Interestingly, I thought the Kronemeyer collection did not include any fakes. I learn something new everyday from folks like you. This one can't be from the Kronemeyer collection because the offset in the Kronemeyer collection has the hard to find short RS amber lamp which the one at Gruhn's has the more common red lamp with the chrome bezel. I imagine that could easily be changed though. What baffles me is that if these are fakes, how they are able to source the parts for these, but then again, I bet in the UK, finding the parts is far easier.