$200K 1963 JTM45 One Of 6 Prototypes

  • Thread starter ElvisNixon
  • Start date
  • This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others.

stickyfinger

Well-Known Member
Joined
Nov 11, 2010
Messages
1,165
Reaction score
696
He's hoping some rich famous guitar rocker with money to blow wants to add this to their collection. Maybe, but likely at a lower price. Trainwrecks sell for 50k to these guys but eventually most get sold again.
 

Derrick111

Well-Known Member
Joined
Jun 26, 2020
Messages
939
Reaction score
1,485
The 500k fugazi Explorer he had on his wall tells you all you need to know about his interest in anything electric.,
What is a fugazi Explorer? As in the band Fugazi?

BTW, that is one sloppy cap job and I would expect a very clean job as a bare minimum at the higher end of pricing, let alone $200k.

I do wholeheartedly disagree with a post made earlier that any clone with Mercury Magnetics transformers will sound like a 60s original in a blind test. MM transformers are well built, but very "clinical" sounding where as the originals are very "organic". Possibly with Merren or Pacific Transformer iron, but not MM.
 

NickKUK

Active Member
Joined
Apr 5, 2024
Messages
148
Reaction score
133
Here are the screenshots:



I don't know much about this era, but a couple of things stand out immediately:
- The PI layout looks wrong for 7 turret-wide board. Likely cut down from an 8 turret board (as MG were known to do).
- The yellow/blue Dubilier caps are anachronistic (should be grey RS PIO).

Resistors look too new for a 1970s build. I'd expect carbon comp that is sharp cornered. Especially if it's on the cheap and using older 50/60 stock being sold on the cheap.

Also very clean.. very clean. Both in terms of dust, solder oxidisation and metal patina/rust. It's like it's had a serious service - ie someone has gone through the old resistors and replace them and possibly the chassis itself. The silicon wonder seems like a real bodge service. The volume knob wiring and soldering etc looks period.

This is 6 years earlier (1957), where I don't expect it to be this bad in terms of dust, I would expect a level of level of patina/oxidisation of metal for people that have essentially DIY'd without plating technology to protect it:
IMG_9696.jpg

Only other question I have is the power - for 1963 in the UK there would not be a need for parity. 1963 UK mains sockets for UK market (unless they were intended for the US market) would have had a 3 pin UK plug without the ability to reverse polarity.

Now if this was a production prototype was it for the US rather than UK first? Typically you'd get the UK market out, sell the amps and then worry about retrofitting - this would get your money in first.
 
Last edited:

vtrain

Well-Known Member
Joined
May 15, 2020
Messages
321
Reaction score
573
Location
Chicagoland
Resistors look too new for a 1970s build. I'd expect carbon comp that is sharp cornered. Especially if it's on the cheap and using older 50/60 stock being sold on the cheap.

Also very clean.. very clean. Both in terms of dust, solder oxidisation and metal patina/rust. It's like it's had a serious service - ie someone has gone through the old resistors and replace them and possibly the chassis itself. The silicon wonder seems like a real bodge service. The volume knob wiring and soldering etc looks period.

This is 6 years earlier (1957), where I don't expect it to be this bad in terms of dust, I would expect a level of level of patina/oxidisation of metal for people that have essentially DIY'd without plating technology to protect it:
View attachment 157888

Only other question I have is the power - for 1963 in the UK there would not be a need for parity. 1963 UK mains sockets for UK market (unless they were intended for the US market) would have had a 3 pin UK plug without the ability to reverse polarity.

Now if this was a production prototype was it for the US rather than UK first? Typically you'd get the UK market out, sell the amps and then worry about retrofitting - this would get your money in first.

I’m no Marshall historian, but I have doubts they were making anything for export in 1963, or even maybe 1964.

I personally think the amp looks too clean, and there are zero details on where it’s been for the past 60 years and why it looks so clean. Who had it, how was it stored? It obviously didn’t see a lot of road time.
 
Last edited:

vtrain

Well-Known Member
Joined
May 15, 2020
Messages
321
Reaction score
573
Location
Chicagoland
He's hoping some rich famous guitar rocker with money to blow wants to add this to their collection. Maybe, but likely at a lower price. Trainwrecks sell for 50k to these guys but eventually most get sold again.

More like a wannabe rocker with deep pockets, IMO. Maybe some CEO who has a bunch of “10-tops” in his office.

No offense to 10-tops or people who love them!
 

Jethro Rocker

Well-Known Member
Joined
Mar 11, 2011
Messages
12,296
Reaction score
21,961
Location
Saskatoon, Canada
Now if this was a production prototype was it for the US rather than UK first? Typically you'd get the UK market out, sell the amps and then worry about retrofitting - this would get your money in first.
Nope, no way. As Ken said they were struggling to make amps and sell them, it was a brand new thing for them. NO exporting at all. No prototypes, they made the first, sold it and continued.
I agree with the cleanliness how could an amp of that age look that clean???
Hell I was born in 63 and I don't clean up nearly as well 😬
 

Jethro Rocker

Well-Known Member
Joined
Mar 11, 2011
Messages
12,296
Reaction score
21,961
Location
Saskatoon, Canada
I’m no Marshall historian, but I have doubts they were making anything for export in 1963, or even maybe 1964.

I personally think the amp looks too clean, and there are zero details on where it’s been for the past 60 years and why it looks so clean. Who had it, how was it stored? It obviously didn’t see a lot of road time.
Agreed. Considering they sold every amp they made in 1963, it must have been used a fair bit. Where indeed is the history on this?
Fishy, man, fishy...
 
Joined
Oct 22, 2021
Messages
57
Reaction score
35
Nowadays with the internet and the ability to 'paper trail' nearly anything, you would think at that price with its 'historical value' there would be an easy paper trail of the owners - at least for the last 30 years or so. If you sell a used car thats 20 yrs old for a few thousand bucks its easy to get the paper trail with carfax ect. Granted with cars that get registered legally its a little different but I'd want to see as much history as possible. I can track my (2) 1983 Marshalls to the last owner, if the money was there, you can track that guy down and where he got it from. Time consuming - yes - but so is coming up with $200k
 
Top