I have an old wrench - the only marking is on the open end - "ECLIPSE". There are so many possibilities of machines/tools/autos/bicycles etc. named Eclipse that is near impossible to find where it belongs.
I suspect it is a tool kit wrench for a machine with post WWII vintage. The most likely type of machine may be a mower or walk behind garden tractor or maybe a small lawn tractor.
I'm interested in selling the wrench.