Here's a picture of the leg markings. As previously mentioned, the figure comes with both Grey and Black boots. Tan Limbs variant has distinctive black boots as can be seen here...Tan Limbs variant on the bottom.
New variant of this figure to document. Comes with very similar leg markings to the first 'Feint' H.K. figure. However, there is a difference between the two leg markings.
Leg Markings:
As mentioned, the new figure has different leg markings. Notice how the H.K is much more aligned with the final dot.
That's pretty much it for the common Klaatu COO variants available. Just looking for a Lili Ledy Figure to document now. Here's the 5 variants I came across including H.K, No COO and a 'Feint' H.K marking.
As previously mentioned, the figure comes with two different Head sculpt /paint applications. First up is the Grey plastic head mould with green paint application
Next up is the Green moulded plastic head with Grey paint application. Tan Limbs variants have this mould.
The green plastic can be seen quite clearly through the grey paint application that has rubbed away
I believe that the different types of head sculpt can be found on different COO figures.
Thanks for putting this together Jeff. As I'm coming to a conclusion of re-building my childhood collection I've started a small Klaatu/AST-5 focus and your information is very useful.