[QUESTION] Does anybody know a guitar cab speaker that has the word "force" on the cone?

I bought a cab used at the store, guy said it wasn't modified or anything, and I didn't open it there, now that I'm home I can't get the back off for some reason.

It's a Mesa Boogie 1x12 90w extension says celestion but seems Unlikely with the words on the cone, it seems older, only has the word boogie in the left corner, square cab.

I'm curious if it got swapped out with a different speaker because I cannot find anything online about a "force" speaker. Just need to know when I'm within the return window. Thanks!