So the Gillette fatboys sell really well on eBay so does some of the other ones that allow for adjustments. The one you have typically sells pretty cheap. There are some other random ones that do well.
I had one like it recently I did pretty well with. I think the box is what people over after more than the razor. I think I got like around $50 for it.
Sitting here looking at two that were Dads. Same year(I think), but one is fancier. Don''t have a camera or a scanner and don't know how to post anyway...Sorry. Checked, one is 1906, the other 1947. Dad and Grandpa. I'm pushing 70 so that's about right. Still no value. I've seen the older one in flea markets for $5 or so...