Historical dating note
Terry Lyons photo reference: the photographed case and insert are plain (unplated) nickel silver. Chrome-plated nickel-silver case finishes also appear in late 1946, so the material/finish alone is not an exact-year code.
Historical year lookup
Historical Zippo references associated with 1946: 1 consolidated case/bottom stamp entries, 1 consolidated insert entries, and 18 individual photographic source records. Date codes, materials and insert construction should be assessed together, especially for transitional years.
Terry Lyons photo reference: the photographed case and insert are plain (unplated) nickel silver. Chrome-plated nickel-silver case finishes also appear in late 1946, so the material/finish alone is not an exact-year code.

Case / bottom stamp · 1946

Insert reference · 1946
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.
Some wartime and immediate postwar cases feature an outwardly curved base; compare the complete case profile.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
A taller case form with a recessed (canned) base is documented during the immediate postwar period.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
Unplated/polished nickel-silver cases are documented in the immediate postwar period, especially early 1946 examples.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
Chrome-plated nickel-silver cases appear by late 1946 and continue through 1947; the crossover is not a strict January boundary.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
Three-barrel internal hinges are widely documented from later wartime production into the 1949 changeover.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
PAT. 2032695 is associated with many late-1930s through early-1950s bottom stamps, with layout variations.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
Early-1940s inserts increasingly use steel, including plated and seamed wartime constructions.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
Nickel-silver inserts are documented for the immediate postwar years, including Terry Lyons’s 1946–1949 specimens.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
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.
Fourteen-hole chimneys are characteristic of many prewar and immediate postwar inserts.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
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.
The earliest flint wheels commonly show a predominantly horizontal tooth-cut pattern.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
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.
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.
Some wartime and immediate postwar examples use a long cylindrical felt/filter piece.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
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.
Some late prewar and wartime examples use flat cellulose or cotton packing materials; survival and originality vary.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.




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.