We have two RanSu pieces - one acquired at a yard sale a few years ago [birds] but the other: the african mask heads was purchased AT the RanSu studio in Elmhurst, NY (part of flushing - somewhere near 90th st and the #7 Subway Line). That's near where we lived when I was very little. My folks had constructed an african themed playroom, and this piece was part of that decor. Now, 50 years later, we have "Zanzibar" our african themed guest room, which is designed around this work of art.
I understand that the artist(s) are no longer living, and that the studio ended production decades ago.
The value of the art is problematic - not high enough to buy/sell and profit from, but not low enough to just go on and collect for the heck (and beauty) of it. My daughter, the interior designer, has also found two through the years...and we'd love to find more. Email me if you have one to sell, but we can't pay anything like 'collector' prices. If you are anywhere from DC to BOSTON we may come pick up rather than add to the expense by shipping.

RanWiz {at} aol -or- yahoo {dot} com.