1980's Goya Concert

My Goya

Martin Goya spruce rosewood concert Ukulele
Taiwan made martin ukulele
post levin concert ukulele
Goya concert by Martin at Lardy's Ukulele Database

Someone Else's

Don't know the strings but its tuned g~C~E~A

Goya 53GCU20 (by Martin)

For a while in the 1970's and 80's Martin owned the Goya name and had a number of Guitars and Ukuleles built for them overseas using this branding. This particular model was made in Taiwan