Skip to main content
Go to accessibility notice


    Gregor Mendel Document Signed "Gregor Mendel". One page, 8.25" x 13.25" (sight), St. Thomas' Abbey, Brno; circa September 1876. Written in German, the document concerns a financial transaction issued by St. Thomas' Abbey, for the sum of 63 gulden. With an official embossed red wax seal affixed at the lower left. There are also two revenue stamps at the top left. The document is framed along with a portrait of Mendel, a plaque, and an image of pea plants to the overall size of 26" x 28.

    Johan Gregor Mendel (1822-1884) entered St. Thomas' Abbey in his early 20s as a way to attain an education, as he could not afford to put himself through school. He briefly pursued a teaching career and taught physics before becoming abbot of the monastery in 1867. After his death in 1884, Mendel was posthumously attributed as the founder of the modern science of genetics. His experiments with pea plants conducted from 1856-1863 established the rules of heredity, i.e. "The Laws of Mendelian Inheritance". A large majority of Mendel's papers were unfortunately lost when they were burned during the cleaning of his workspace.

    Condition: Light foxing throughout, with flattened folds. There is minor creasing around the seal and stamps. Else good.

    Auction Info

    Auction Dates
    May, 2019
    14th Tuesday
    Bids + Registered Phone Bidders: 7
    Lot Tracking Activity: N/A
    Page Views: 448

    Buyer's Premium per Lot:
    25% on the first $300,000 (minimum $49), 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 for: Sign-in or Join (free & quick)

    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 2019 November 14 - 15 Space Exploration Featuring The Armstrong Family Collection™ Part IV Signature Auction - Dallas.

    Learn about consigning with us

    Heritage has gone above and beyond my expectations in handling all of my transactions in a thoroughly professional manner. I would not hesitate to recommend them to anyone worldwide for the exemplary auction and valuation services they provide.
    Richard H.,
    Corsicana, TX
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search

    Recent auctions

    2019 June 22 - 23 The David and Janice Frent Collection of Presidential &  Political Americana, Part V - Dallas
    2019 June 22 - 23 The David and Janice Frent Collection of Presidential & Political Americana, Part V - Dallas
    REALIZED $745,438