Old 70's Munoz Single Fin?

Hoping someone here can help identify if this board was shaped by Mickey Munoz or not…or possibly direct me to Mickey or someone who can help identify it. It is a 6’8" single fin with the typical 70’s rail profile. I picked it up at a garage sale in Agoura Hills, CA (near Malibu). It has no lams or logos on it anywhere. It looks like it says “MUNOZ 18 or 81” and “37 glassed at Hobies” on the stringer. Any help with this would be greatly appreciated. Thanks!