Aphrodite of the Gardens Marble ? statue located outside the city walls of Athens, ca. 410 B.C.

Pausanias 1.19.1:
But the statue of Aphrodite in the Gardens is the work of Alcamenes, and one of the most note worthy things in Athens.

J.J. Pollitt, Art of Greece (1965) p. 77:
Pliny the Elder, Natural History 36.16
It is certain at least that he (Pheidias) was the teacher of Alkamenes the Athenian, a sculptor of the first rank, by whom there are a number of works in the temples in Athens, and also a particularly famous statue of Venus outside the walls which is called the "Aphrodite in the Gardens." It is said that Pheidias himself put the finishing touches on this work.

Stewart, T58:
Lucian, Imagines 6 (2nd century A.D. work)
(Lykios, describing the features of Panthea, the ideal woman): But he will take the curve of the cheeks and the fore part of the face from Alkamenes' [Aphrodite] in the Gardens, plus her hands, graceful wrists, and supple, tapering fingers.