Buggy wrench

[jimwrench]

Some wrenchs I got at auction Sat. No questions on the 18 in Coes or the Parke Metalware Bycycle wrenchs, but the Buggy wrench has me stumped as to maker. Mark is D in a diamond. D could be an O.
Other side is marked 1 1/4 and 2315E.
I have some Eberhard buggy wrenchs but don't recognize this maker. Would appreciate your knowledge of this maker.

[Bus]

Jim,I have one also but haven't been able to determine the maker.

[jimwrench]

 Thanks Bus if you can't I D it I won't even try. I'll hang it on the wall and let someone else worry about it.
                                                                                                                                              Jim

[turnnut]

 is it possible that the word "wallhanger" started with wrench users/collectors ?