This is an original brass serial name tag for a 3hp Fairbanks Morse Z gas engine.  It is for the earlier style engines so do your homework to be sure it is for your application.  It is in good used condition with no cracks, breaks, or repairs of any kind.  It measures about 4 x 5 inches and mounts with two holes 4 5/8 inches apart on center.  If you've been looking for one to complete a restoration because yours is missing, broken, or repaired here is a very nice one.  The pictures tell the story.  I can always be reached by phone or text message at 262 573 193 1 if you'd like to talk about it.  Good Luck.