So, performing body cavity search on recently acquired 1991 CE, is it wildly assumptive that this means "the man himself" worked on this guitar?:

Also, any idea what the "W" means?

And, thirdly, just curious, is the following something that would be formally considered "finish checking?" There are a series of cracks that seem almost below the surface, not running with the grain of the wood. You can see it more in the first shot, but there is some on the back I tried to capture as well: