VINTAGE OLD TOOLS Hags Tooth ROUTER PLANE Dado #71 STANLEY Clone? Hand ROUTER.
Untouched Dado ROUTER Plane
Can not see any makers marks, however there could be under the dust and surface rust.
Rare find and useful tool.
More information can be found here
http://www.supertool.com/StanleyBG/stan10.htm?fbclid=IwAR1vifOWS4r8Suw61jGZmyQ7lacnxRTkP0wlU9nzOCnzHYg9ach9Desl-E4
Happy to answer any questions.