DALLAS, TX.- An Apollo guidance computer, a strip from an astronaut's EKG test as he stepped on the moon and a flag signed by the two most famous astronauts of all time are expected to be among the most coveted lots in Heritage's Nov. 10 Space Exploration Auction.

An Apollo Guidance Computer: Original Display and Keyboard (DSKY) Unit, Signed by (astronaut) Harrison Schmitt (est. $25,000-35,000) was designed at M.I.T. and manufactured at Raytheon, has 19 keys and a 21-digit display, and is inscribed on the bottom of the front panel in black felt tip ink: "Jack Schmitt/Apollo 17." A unit like this one — which was not flown — was attached to the control panel of each lunar module, and two were mounted in each command module. This unit allowed the astronauts to interface with the groundbreaking on-board Apollo Guidance Computer. It helped them collect and provide flight information, and was vital to precise lunar landings.

A Neil Armstrong EKG Strip Recorded as he Made the "Giant Leap for Mankind" onto the Lunar Surface, in a Framed Display (est. $25,000-30,000) shows a record of the electrical activity in Armstrong's heart as he took arguably the most famous steps in history. The six-inch strip from the earth-based electrocardiogram device, which was gathering data from electrodes under his suit, is one of just five pieces of the original strip. This strip is mounted to a 7-1/2-by-9-1/2-inch certificate which reads: "EKG Recordings taken as Apollo 11 Commander Neil Armstrong took Mankind's First Step on the Moon" at the top and "4:13:24:28 Ground Elapsed Time" at the bottom.

An Apollo 11-Flown American Flag on Presentation Signed by Armstrong and Aldrin in a Framed Display, with Aldrin-Signed Photo of Presentation Ceremony (est. $20,000-30,000), which measures 5-3/4 inches wide and 4 inches high, is mounted on a 13-1/2-by-10-1/2-inch certificate that includes the following text: "This Flag Presented to F.S. Schwend, was carried to the Moon on Apollo 11 Flight July 16-24, 1969 by Astronauts Neil Armstrong and Buzz Aldrin" as well as a rare Texas Art Embroidery mission insignia patch. The lot includes an original 10-by-8-inch photo of Aldrin handing Schwend this presentation while engineer Chuck Crowell looks on. Aldrin signed the photo "To Fred Schwend/With Appreciation For Your/Efforts To Promote Americanism/Buzz Aldrin Apollo 11."

An Apollo 13-Flown Complete Microform Bible, with Crew-Signed and James Lovell-Signed Certificates, Originally from the Apollo Prayer League Archives of Founder Rev. John M. Stout (est. $15,000-25,000) contains the complete text of the King James Version of the Bible, miniaturized by NCR down to a single piece of microfilm that is just 1-1/2 inches square. It was aboard Apollo 13 with the intent of being carried to the lunar surface in the lunar module Aquarius. An on-board explosion caused the abortion of the lunar landing, but the craft did circle the moon, using its gravity to "slingshot" it safely back to earth. This bible, which was aboard that mission, is accompanied by an 8-1/2-by-11-inch certificate on NASA letterhead that reads: "No. 13-010. This bible was flown to the moon April 11-17, 1970 on Apollo 13 spacecraft" and bears the signatures of astronauts James Lovell, Jack Swigert and Fred W. Haise.

An Apollo Spacesuit Program: Rare and Early SPD-143-3 "Suit Coverall" by International Latex Corporation (est. $5,000-8,000) is a one-piece metallic-finish suit that is signed on the lower right torso with the signatures of Charles Conrad Jr., Richard Gordon and Alan Bean — signatures that were acquired at a private 1994 signing event that was coordinated by the Odyssey Group. This suit was one of the very first TMGs manufactured by ILC (serial No. 10), and is the same kind as those used (until 1967) over the pressure suit.

Other top lots include, but are not limited to:

· An Apollo 14-Flown Silver Franklin Mint Medallion, Serial Number 0030, Originally from the Personal Collection of Mission Commander Alan Shepard with a signed letter of authenticity: est. $4,000-6,000

· An Apollo 11 Crew-Signed "First Man on the Moon" Stamp: est. $2,800-3,600

· From the Earth to the Moon Emmy Judge Presentation Signed by 11 Apollo Astronauts, Including Five Moonwalkers: est. $2,500-3,500

· A Neil Armstrong-Signed White Spacesuit Color Photo in Framed Display by Novaspace with their COA: est. $2,000-3,000

· A Project Cover Signed by 14 of 16 Gemini Astronauts: est. $1,600-2,400