Martin style "O" Ukelele 1950's Type_ Acoustic Guitar The RB-20 features a "backlight"

The RB-20 features a "backlight" style durable plastic pot with 24 metal brackets

buttons 2 and 3 offer up some smooth chorus sounds

This bag has so much structure that it is more like a case than a bag

PA back in the 1920s

Medium-sized white plastic buttons are comfortable to hold and look great

Martin style "O" Ukelele 1950's Type_ Acoustic Guitar The RB-20 features a "backlight"Here for sale we have another Lovely Vintage martin Soprano sized style O Ukulele. This particular example was made in 1950's. This one like many others from this era have a real clear and crisp voice. In overall great condition with only minor scratches and dings from use but no cracks to speak of which indicates it was well loved protected through the years. comes with poly foam modern case with back pack straps.