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In Quiet DetailA visual study of simple, well-made objects.

Historical year lookup

Zippo 1957

Historical Zippo references associated with 1957: 13 consolidated case/bottom stamp entries, 2 consolidated insert entries, and 19 individual photographic source records. Date codes, materials and insert construction should be assessed together, especially for transitional years.

13 consolidated case references2 consolidated insert references19 documented photo records

Historical context and cautions

Historical dating note

A real 1957 Bradford example supplied by Terry Lyons documents a brass case with steel insert and provides a photographed dot-layout comparison.

Slim manufacturing note

The insert keeps the 1956-style logo but no longer has the wheel guard.

Canadian production note

Around 1957/58 the humped cam spring begins to give way to the narrow straight cam spring. Component overlap is expected.

Bottom stamps and cases

Insert references and construction

Construction features documented for 1957

Typical US regular-production chronology from independent collector research by Hardi Döhler. The ranges overlap, and Canada, Slim, Replica, Sterling, Japan-market and special editions may differ. These are supporting observations, not a definitive date determination.

Case shapes

  • Postwar recessed-bottom profile 1947–2026 · broad · Source: Hardi Döhler

    The familiar recessed-bottom case profile develops in the postwar years; this alone cannot distinguish later decades.

    Present-day cases, replicas and special lines can depart from the usual form.

Case metals and finishes

  • Brass as common regular-case substrate 1954–2026 · broad · Source: Hardi Döhler

    Chrome-plated brass becomes typical again in the mid-1950s; special materials and later editions are exceptions.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Hinge development

  • Five-barrel hinge with unequal widths 1956–2005 · broad · Source: Hardi Döhler

    Later five-barrel hinges generally have an uneven barrel-width pattern. This broad clue cannot determine a precise year.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Patent and bottom-stamp wording

  • PAT. 2517191 with dating marks 1957–1967 · approximate · Source: Hardi Döhler

    The second patent number is frequently found on period bottom stamps alongside date marks; placement varies.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Insert materials

  • Chrome-plated sheet-steel insert 1953–2026 · broad · Source: Hardi Döhler

    Chrome-plated steel construction with a seam is typical of later regular inserts, but special and premium variants differ.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Insert lettering

  • Patent text on one insert face 1943–1959 · approximate · Source: Hardi Döhler

    One-sided patent/instruction layout is common in several mid-century insert families; the exact layout evolved.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Chimney construction

  • Open-sided 16-hole chimney 1947–2026 · broad · Source: Hardi Döhler

    Sixteen holes and an open wheel-side chimney wall become typical from the late 1940s onward.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Cam springs

  • Humped leaf cam spring 1937–1957 · transitional · Source: Hardi Döhler

    The arched/humped leaf cam spring is documented across several prewar and postwar decades.

    The photographed 1947 Terry Lyons example has a modern replacement spring; never infer 1947 spring design from that component.

Flint-wheel cuts

  • Cross-cut flint-wheel teeth 1946–2026 · broad · Source: Hardi Döhler

    Cross-cut flint-wheel pattern becomes typical after the war, with possible overlap and replacements.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Flint-wheel rivets

  • Hollow flint-wheel rivet 1933–1963 · transitional · Source: Hardi Döhler

    Hollow flint-wheel rivets appear through the early 1960s; later examples may carry replaced components.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Felt pads

  • Unprinted light-coloured felt pad 1947–1992 · broad · Source: Hardi Döhler

    A plain pale rectangular felt pad is documented across many decades; replacement pads limit its dating precision.

    Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.

Wicks and packing

  • Pre-copper-wire wick construction 1933–1980 · broad · Source: Hardi Döhler

    Older wick styles can differ from the later copper-wire-interwoven wick; repairs commonly replace wicks.

    Some historic wick materials may contain asbestos; avoid disturbing uncertain old material.

Explore the full construction chronology

Known period variants

Case construction evidence

Insert construction evidence

Similar years

1956 · 1958

Interpretation: References may cover multiple years. A documented insert date is not proof of its case production date, and special Replica stamps require separate interpretation.

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