Newbie with a question

Found this today can any one tell me about it.
Landers Frary & Clark
Has 336 stamped on the back side.
HAS. Universal on the blade..

Good shavers for sure. Besides the bit of rust, its in great condition.
Have a few myself.

Here is a good start:
http://straightrazorpalace.com/srpwi...rary_%26_Clark

Welcome aboard,,,,,,,,,,,Attachment 261126