Skip to main content
Go to accessibility notice

    Description

    Lovely Porter Counterfeit Detector. This beautiful antique brass, mahogany and diamond-cut French glass counterfeit detector is one of about a half-dozen that we know of. Although the date of manufacture is not stated, it appears to us to be of late-19th century vintage, most likely between 1870 and 1890. The device consists of a brass frame marked with alphanumeric coordinates, a glass plate with small squares, similar to graph paper, and two sliding panels on which to juxtapose a genuine bill and a suspected counterfeit of the same type. By manipulating brass knobs, the notes may be moved into positions where their design features can be compared with respect to horizontal and vertical axes. Being in incredible, virtually as-made condition, this Porter would be the highlight of any collection of counterfeit detectors, and it stands very well on its own as an association item to a collection of fine currency. We sold two of these Porters last January; both brought right around $5000 ($5170 and $4840). This one is as nice as either of them, perfect but for a few minor surface marks on the wood that would probably rub out with furniture polish. Est. 4,500up

    Auction Info

    Auction Dates
    September, 2001
    21st-22nd Friday-Saturday
    Bids + Registered Phone Bidders: 8
    Lot Tracking Activity: N/A
    Page Views: 716
    Sold for: Sign-in or Join (free & quick)

    Heritage membership

    Join Now - It's Free

    VIEW BENEFITS
    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
      winnings 
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976
    Consign to the 2019 December 4 - 6 HKINF World Currency Signature Auction - Hong Kong.

    Learn about consigning with us

    I think heritage is the best auction house and has the best service - that’s why I use you. 
    Sara B.,
    Dubai, UAE
    View More Testimonials

    HA.com receives more traffic than any other auction house website. (Source: Similarweb.com)

    Video tutorial

    Getting the most out of search

    Recent auctions

    2019 June 26-28 HKINF World Paper Money Signature Auction - Hong Kong
    2019 June 26-28 HKINF World Paper Money Signature Auction - Hong Kong
    REALIZED $2,686,315