Is there a marking somewhere on the speaker that would tell me? I have a Mesa 412 Std. Recto Cab made in 2005 w. Vintage 30s. One broke and I have to replace it. The stickers say SUFFOLK, ENGLAND. BUT!! there's no "MADE IN" ENGLAND. How do i know these speakers aren't from the China factory? How can I buy a V30 to match what I have already?