Hey Simon B ,I got 4 of those,2 congas and 2 super tumbas.They are called SONOC, which stands for "Sonoridad Cubana".They are very heavy and are madeout of "Cahoba cubana", an extint caribbean mahogany wood indegenous of Cuba and Santo Domingo.Cahoba is on the "endanger species".The drums were made on the "Fernando Ortiz" factory in "El Cerro" neighborhood,which happens to be where I was born.They haven't use Cahoba since the mid 80's,now they use oak when they find it and lately they been using fiberglass.What I did since the hardware looked primitive,I had Junior Tirado in Brooklyn make the crowns and the sideplates for me.Mongo played my drums before he died and he loved the big fat sound they have.The conga can be tunned really high and the sound is incredible.Forget any mass produced drums,the will never compare.I paid dearly for them and have a letter from EGREM (Ministry of Culture) in la Habana.I also have 3 Vergaras made in Cuba in the early 50's, but the ones used by los "Mun~equitos" and "Los Papines" are SONOC. Saludos, Dario.