Paul Weitz's Project Skylab commemorative cover with a 'Colorano' silk color cachet honoring the mission, postmarked on the Skylab 2 launch date of May 25, 1973, signed on the front in black ink by Charles Conrad, Joe Kerwin, and Paul Weitz, with the latter also signing the reverse and stating that the cover is "From my personal collection." Includes a signed letter of provenance from Weitz. In fine condition.
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