I was thinking that the only nat. might be the "Zavalla" - mostly sold in boxes of 40 for around $120-130. To my surprise, a search turned up this: http://www.gothamcigars.com/elreydelmundo.html where all the Robusto, Robusto Larga, and Robusto Suprema are offered in oscuro and natural, as well as the Zavallas, in natural. I don't know the diff, but BigPoppaPuff will likely have some insight.