In Eric Uphills article on the Egyptian Sed Festival rites, he makes reference to an altar which was missed by Naville on page 367:

"Above the royal couple there is shown a royal falcon representing Horus and a figure of a cow which is referred to as "Isis.""

In making this statement, Uphill is referencing pp59-61 of "Tell Basta" published by Labib Habachi in 1957. A book which is not commonly available today. I am seeking any photos or diagrams of the altar in question here.

Reference:
Eric Uphill, The Egyptian Sed-Festival Rites, Journal of Near Eastern Studies , Oct., 1965, Vol. 24, No. 4, Erich F. Schmidt Memorial Issue. Part Two (Oct., 1965), pp. 365-383