Hoffman Mark V (21M700)

I found this Hoffman Mark V (21M700) cleaning out my grandma's garage. It's probably there since the early 70s. I have the original manual and sales receipt (sold 8/28/53 for $359.95).

She is looking to get rid of it. Does it have any value? As a whole or as parts? Should i post it on Craigslist or ebay?

Thanks for any advice. I am new to the vintage tv game.

Check out the pics.