Skip to main content
Go to accessibility notice


    Skylab I (SL-2) Flown Pair of M509 Manned Maneuvering Bolts on Presentation Plaque from the Crew, Directly from the Personal Collection of Mission Backup Pilot Bruce McCandless II. An 11" x 8" x 0.75" wooden plaque bearing an embroidered mission insignia patch and a pair of bolts along with an engraved plate that reads: "To Bruce McCandless. The Orville Wright of EVA Maneuvering Units, We Present These Launch Bolts From M509. We Cranked It Up, But Didn't Get To Pull The Chocks." Beneath are the facsimile signatures of Charles Conrad, Joe Kerwin, and Paul Weitz. Skylab I performed a number of experiments on McCandless's M509 Astronaut Maneuvering Equipment but it was years later (1984) before the later MMU was tested in space with an untethered EVA. Great item. Excellent.

    Auction Info

    Auction Dates
    November, 2019
    14th-16th Thursday-Saturday
    Bids + Registered Phone Bidders: 5
    Lot Tracking Activity: N/A
    Page Views: 818

    Buyer's Premium per Lot:
    25% on the first $300,000 (minimum $19), plus 20% of any amount between $300,000 and $3,000,000, plus 12.5% of any amount over $3,000,000 per lot.

    Sold on Nov 14, 2019 for: Sign-in or Join (free & quick)
    Track Item

    Heritage membership

    Join Now - It's Free

    1. Past Auction Values (prices, photos, full descriptions, etc.)
    2. Bid online
    3. Free Collector newsletter
    4. Want List with instant e-mail notifications
    5. Reduced auction commissions when you resell your
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976
    Consign to the 2022 February 19 Americana & Political Signature Auction.

    Learn about consigning with us

    Thanks a million for getting approval to sell my Civil War Hospital Death Ledger! You made them AND ME , a nice profit. You are the best!
    Ed W.,
    Mount Vernon, OH
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search