Have you thought od doing a search?
I think it is the one. Same number on the magnet, but not in the title???12 inch Speaker??? Might be this one...
Brand new Peavey Blue Marvel 12 inch 4ohm 75 watt guitar speaker NewOldStock - made in USA by Eminence Great for anything from a combo amp replacement to a full stack. We have many in stock, Grab this liquidation deal on a premium quality, Made in USA guitar speaker while you can. Limited to...speakeraddict.com
Concerning my second question in my OP, I found this document that could be useful in the future.I imagine the *item* number is different than a *model* or *serial* number. Imo the specs are probably for your speaker or close enough.
Be aware that while 75 watts may have been the power handling when new, a 35 year old speaker will have lost about a third of its power handling per the late Ted Weber.omebody can tell what is the power handling of this specific Peavey (made by Eminence) Blue Marvel No. 70777199 4 Ohms speaker?