Tarzan and the Castaways Reproduction

This is an amazing reproduction of the famous Boris cover art to the Ballantine paperback in the 70s. Its is huge and so well done, but unfortunately I have no idea who the artist is. I bought it in auction and was so impressed that I wanted to commission another Boris reproduction, of the cover from Tarzan the Magnificent. I learned that it was an up and coming Filipino artist and that the painting had come via Tony De Zunga, another favorite of mine. Then sadly, Tony passed away before I had a chance to find out the identity of the artist. If you happen to know, please contact me. Despite being a reproduction, it is one of my favorites in my collection, because it makes me so nostalgic about the ERB paper backs I grew up on in my early teens. I was awestruck by those covers by Boris and Adams.