Skip to main content
Go to accessibility notice


    Hermann von Helmholtz Autograph Letter Signed. Three pages of a bifolium, 3.75" x 6", Berlin; February 4, 1884. In German. Signed, "H. Helmholtz."

    Hermann von Helmholtz (1821-1894) was a German physicist, physician and philosopher who contributed to electrodynamics, mathematics, physiology, optics and meteorology. He is best known for his 1847 law of conservation of energy and his 1851 invention of the ophthalmoscope, which allowed physicians to examine the inside of the eye for the first time.

    Condition: Smoothed mailing creases.

    Auction Info

    Bidding Begins Approx.
    30th Friday
    Auction Dates
    19th Wednesday
    Proxy Bidding Begins Approx.
    11 Days
    Bids + Registered Phone Bidders: N/A
    Lot Tracking Activity: N/A
    Page Views: 52
    Auction Type
    Signature®:  Heritage Live®:After Internet bidding closes, live bidding will take place through Your secret maximum bid placed prior to the live event will compete against the live bids. To maximize your chances of winning, enter realistic secret maximum bids on our site. Many of our proxy bidders are successful at winning lots in these auctions, and usually below their secret maximum. You can also place last minute bids directly with us by e-mailing or calling 1-866-835-3243. (Important note: Due to software and Internet latency, live bids may not register in time, so enter realistic proxy bids.)

    Signature® Floor Sessions
    Proxy bidding ends ten minutes prior to the session start time. Live Proxy bidding on Heritage Live starts 7 days before the live session begins and continues through the session. During the live auction event, bidding in person is encouraged, and Heritage Live includes streaming audio and often video during the event.
    Track Item