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Mid-1960s concept model. It looks remarkably like the final LM, with its octagonal descent stage with four extendable legs (although the folding mechanism differs and it still seems to lack the porch and ladder). The main crew compartment also looks pretty much like the final configuration (other than the round ingress/egress hatch), with its circular structure and triangular windows. The shape of the unpressurized portion of the LM still has not reached its final configuration.

The accompanying sign reads

Grumman refined the LM design by the mid 1960s. It had two small triangular windows and four folding legs. The front round docking hatch remained. There was still no ladder.

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