Here is an excellent reproduction cap for your GI Joe Talking Astronaut. The mold was made from an original part, all dimensions and details are the same. This piece was cast in white plastic.

PLEASE READ !! eBay requires "condition" to be noted. The molds for most parts I cast were made from vintage parts that often had playwear & age blemishes. Although "condition" is noted as "new", any defects on the original vintage parts will also show on reproductions. Please ask if clarification is needed. Thanks!