Ewald, that's what some people will call a narrow pannel tweed. The main eras of vintage Fender amps are tweed, blackface, silverface. From there they can be broken down into narrow/wide pannel or tv front tweeds, blondes and brownfaces are transitional into the blackfaces, similar to the early silverfaces. Then the drip edge silverfaces and finally the MV and UL silverfaces which will probably be the only ones that will not actually drive.
ez wroteyeah yeah Youtube vid, you get the idea. If that's what you want a clean sound to sound like, get one like this.
It's quite tough to "get one like this" with that amp. Replicas don't really sound close. There's some serious mojo going on in that amp wrt specific components and transformers, and to find an original tweed that will sound like that will be a bit of a mission, let along being able to afford one.
