Star Trek TOS Vintage 1978 Calendar Still in Original Mailer Ballantine Books. This calendar is still factory fresh in the original color factory mailer-box. The calendar measures approx 12.5″ x 13″. This item is in the category “Collectibles\Science Fiction & Horror\Star Trek Collectibles\Other Star Trek Collectibles”. The seller is “peewee1984″ and is located in this …