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  • William Helfricht Surveyor's Compass

    Lot: 349
    Sold for: $584$475

    William Helfricht Surveyor's Compass, Philadelphia, Pennsylvania, mid-19th century, 6 1/2-in. dia. engraved silvered dial with acanthus-style leaf representing north and reading "Warranted" and "Wm. ...

  • William Helfricht Vernier Compass

    Lot: 392
    Sold for: $431$350

    William Helfricht Vernier Compass, Philadelphia, Pennsylvania, mid-19th century, 5 1/2-in. engraved silvered dial reading "Wm. Helfricht Maker/Philada.," with fleur-de-lis marked "Warranted" in the ...

  • William Helfricht Vernier Compass

    Lot: 394
    Sold for: $431$350

    William Helfricht Vernier Compass, Philadelphia, Pennsylvania, first half 19th century, 6-in. dia. engraved silvered dial reading in the center "Wm. Helfricht?Maker/Philada.," needle lifter and ...

  • William Helfricht Surveyor's Compass

    Lot: 259
    Sold for: $246$200

    William Helfricht Surveyor's Compass, Philadelphia, Pennsylvania, mid-19th century, 5 1/2-in. dia. silvered dial engraved as above, vernier, sighting vanes, indexing disc engraved 1-16, (lacking ...

  • Oxidized Brass Sextant

    Lot: 602
    Sold for: $294$250

    Oxidized Brass Sextant, London, with silvered scale, index arm with vernier, magnifier and tangent-screw adjustment, mirror, reflector, shades, rosewood handle and two telescopic sights, radius 9 ...