> The prize in my opinion is the piece holding the file, I think it's 
> purpose
> is to file the edge of a scraper blade square before burnishing.

It could do that, but it's a tool for jointing a saw blade before 
sharpening.
You've seen those saws that are beginning to look like a crescent moon?  
That
comes from sharpening without jointing the saw first.

The other item of great interest is "the marking gauge is dated '86."  
See the
two humps on the fence?  That gauge is for scribing a line on a curved 
surface.
I've seen exactly one in the wild, and it resides in my marking gauge 
drawer.
When you need one, nothing else will do.  Well, you *can* drive a couple 
of
upholstery tacks in the face of a regular gauge.  I had to do that for a
couple of jobs before I found mine.  These are a lot more scarce than a
saw jointer.

Good job.

Mike in Sacto