Galen (item # 50900/6 ) (assortment # 50902) packed 4 per case
Because Cornelius and Galen were both portrayed by the same actor, Roddy McDowall, Mego chose to use essentially the same head for both action figures.
The costumes and shoes are also virtually identical. It is speculated that Galen received some brighter colors of vinyl (from burgundy to a near purple tone) while Cornelius tended to get a simple brown. There are even different shades of thread in the stitching of the tops.
There is no absolute way to differentiate the figures, however, since both sets of Planet of the Apes figures were released on the Mego "Type 1" body - that is, the body which used metal joints, most prominent in the wrists -- AND on "Type 2" (plastic jointed) bodies. What does all this mean? Simply, a male Chimp on a Type 2 body is probably Galen, while a male Chimp on a Type 1 body is probably Cornelius, but it is impossible to be sure unless the figures are carded.
A complete figure (Cornelius OR Galen) has green tights, a green top with vinyl details, and moccasins (of either brown or burgundy tones). There is a very rare but confirmed variation of Cornelius in an outfit made of brown fabric in place of green, but with the same vinyl details. This outfit has been found on Cornelius only, not yet on Galen.
1st issue US card (all characters copyright of Apjac Prod and 20th Cent. Fox)
2nd issue US card ( astrerix on Ursus (black face) all other copyright of only 20th Cent. Fox)
3rd issue US card ( Ursus and Urko switch names, asterix on Ursus (helmet head))
US window boxed
Palitoy card (UK)
Forbidden Zone Gift Set (none found to date)
Fortress Gift Set (none found to date)
Catapult and Wagon Gift Set ( none found to date)
Boxed Galen courtesy of Mike J
First Version Mego carded Galen courtesy of Mike J
This is the second version Galen courtesy of Mike D'Aloia, note the asterix on Ursus (black face) all other copyright of only 20th Cent. Fox