Lol funny thing is when I post in the BST here I never sell anything. No one seems to want to buy and I end up selling most of my stuff on eBay or in other forums.
It is a nice score also. Treet razors are not your common run of mill razors you see for sale that often. That razor would have been made sometime between 1938 when the Treet company was founded and 1948ish depending if it says American Safety razor company anywhere on the head, if it does then sometime from 1948 and up.
I have to take back the dates based upon what I've seen now, this could be anywhere 1938 up and beyond the merger with American Safety Razor company in 1948. Unless the earlier razors had a different razor head style I've seen a few examples perusing the internet that are from after the merger and they match this head style exactly and don't have any American Safety Razor company markings on them.
Lots of times sellers don't know much about what they are selling and go by similar items for the description. It is pretty well documented that the Treet company and brand didn't come into existence until 1938. Make sure to give a shave report over in the SE and injector thread once you get around to using it.