The listing, PROBING THE VASTNESS OF SPACE: OPTICAL TELESCOPES - FIRST DAY OF ISSUE ENVELOPE - 2000 - MINT has ended.
Official First Day of Issue Envelope
PROBING THE VASTNESS OF SPACE
Optical Telescopes
Cerro Tololo Inter-American Observatory, Chile
Issued July 10th 2000
MINT to NEAR MINT Condition!.
IMPORTANT - envelope DOES have name and address on it, but has been edited out for posting photos online. You can always white it out, or leave it there. It doesn't effect value, since all first day issues are "sent" to you.
Free shipping in USA only.
Please check my other auctions for lots of other first day issue envelopes!!!