The one on the left "es el macho", measuring 11.25" head diameter. It has a huge belly (bien pipona), it doesn't fit on any of my conga bags. The hembra is a bit over 12" and it fits in my conga bags (tight fit). The macho's belly is much bigger. They are incredible sounding timbas, ol' skool, bien barrigonas. You can tell they are made by a Caribbean artisan (hechas a mano). You have to place the crowns very precise on top of the side plates, if not the lugs will come out twisted. There was nothing of mass production in Ismael's workshop (taller), each piece was a unique creation, there are similarities but not uniformity. These are the signs of artisans that work with their hands and don't depend on technology (machines). Ismael instruments make Puerto Rico proud.
Enclosed find a photo of another pair of Ismaels I had, these were Caoba. The ones now (below) are oak (roble).
Saludos.