Can't say as I've ever seen one like that FishGut, if it's 40 years old I would suggest hitting the antique shops and flea markets to see what turns up. Maybe you could find one to pattern off of to make more, I'll keep my eyes open as I hit the flea market circuit in the summertime, might try ebay or craigslist also. If I would happen across one I'll let ya know, I'm just north of you about 75 miles.