Space Cover #444: Postmarked twice, no double cancels
Up to date all the SCOTWs are devoted to a space mission, a rocket, an astronaut, a cachet or a specific date or place. No this post.
Many covers bear two or multiple postmarks with several dates for marking space events like launch-landing, launch-docking, etc; many covers bear two identical covers just for requesting that collectors want to see the postmark in a blank space of the cover.
However, this post is something different to all previous ones as this is not devoted to any of topics above quoted but to the cancelling process of the space covers.
This SCOTW refers to covers cancelled twice because the first postmark did not tied all the stamps and a second one was later applied, or becasue the first postmark was illegible and a second one was then necessary for reading it.
In the top cover the machine postmark Cape Canaveral May 15, 1963 tied just the top stamp. A second and different postmark (hand this time) was applied over the bottom stamp.
This cover is related to the second option for postmarking twice. The machine cancel applied was not legible and then a second, and again different postmark was applied to consolidate the date of the cover.
I am quite sure you have many of these postmarked twice covers between your albums. Please, search them and share with others your findings.