As the above mentioned, the -71 has a "No nasa" variant that is denoted because the most common case back includes the "flight-qualified by nasa," implemented following the moon landing in 1969. You don't see that mentioned on -69's because the reference was usually "No nasa," (there was a "straight writing" case back for -69's that mentioned the moon landing, but in a different format than the standard flight-qualified with hippo-campus case back, and is generally less common than the pre-moon case back).
You're looks like a rather nice example of a pre-moon 145.022-69 for that matter. Would you mind sharing a few more digits of your serial number? Mine is 31620XXX.
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