Vintage??   I was in the machining trades for 40+years.   Retired 21 years past   Got some time before I retired.   Pic's 6-7-8 Shows condition of face/back   This the condition for the full12 feet.   Blade with is 3/4" wide.  Hook on end is free to move.  I was in final inspection so was never around coolant     Note: No additional etching/writing on item such as personal name/company identification.   Any additional questions JUST ASK   Thanks   Regards   DDT