Re: the little badge on the front of the Marshall 4X12's
I find that lots of time I can into one of the local 'mom & pop' guitar shops and ask about stuff like this and they will just give you one if they have it.
I went into Ray Henning's Heart of Texas music looking for an allen wrench so I could adjust the intonation on my son's Strat. Ray came back with two of them, told me I could have them for free and even advised me on using wire snips to remove the tips after they wear down. Too cool. :cool3: