Pretty cool old Allstate (Sears) 10 Grand tachometer I picked up. Really don't have any use for it. Pretty neat guessing late 1950s or early 1960s convex (curved) gl***. Chrome shines well on cup shows some age with a ding or two. Don't know if its direct hook up or needs sender/brain. Be great in about any vintage car 1960s back. I'm sure there are others out there but first one I've seen kinda the reason I bought it in the first place. $125 plus shipping from Knoxville TN