[Exhibitman]

Daniel, the Lelands listing [Lot 33, June 2007] actually states in pertinent part:

"Exceptionally rare Muhammad Ali card. This is a 1.5 x 2" blank-back cardboard "Foto en Carton" card from Argentina. It is card #332 from the album Hace Millones de Anos."

Argentinean cards [similar to those from Venezuela, Uruguay and other SoAm countries] were issued to be glued into albums. The album name "Hace Milliones de Anos" is the key to the puzzle. I was able to track down the album itself on SoAm Ebay. It is a publication that appears to contain 400+ cards from a variety of subjects including a El Deporte Al Dia [Today's Sports] section with mixed athletes. It appears to have been a multi-year issue running from at least 1979-1983, so the Clay card could be a 1979 and a 1981 issue.