Marshall Silver (Black) Jubilee and 90's Slash Signature

[Turret]

I'm trying to set some confusions straight

I'm looking for Silver/Black Jubilee and 90's Slash Signature amps owners to help me with that

Right now I see that there is more just only two PCB revisions and the differences are more significant than only one cap swap to go from early to late spec but I really need more data (pictures) to draw an conclusion and the time line

PCB revisions presented for comparison. Top board is JM112B, bottom JM112C. Main differences aside from slightly different layout are located in Rhythm clipping network, FX Loop, relay matrix and tonestack. There are some component shifts in coupling cap values too.

I'm mostly looking for rev JM112A (if exist) and 90's Slash signature amp, but I'll be happy with anything you have

So if you can help, please do

Main board layouts attached

[lovetone]

Can I ask the reason why?

[Turret]

Data record?

I don't really understand your question