Historical dating note
MADE IN U.S.A. is reported from October 1990.
Historical year lookup
Zippo 1990
Historical Zippo references associated with 1990: 8 consolidated case/bottom stamp entries, 3 consolidated insert entries, and 14 individual photographic source records. Date codes, materials and insert construction should be assessed together, especially for transitional years.
Historical context and cautions
Slim manufacturing note
“Made in USA” is added to the bottom stamp.
Bottom stamps and cases
1986–2000 · Regular · Niagara Falls
Case / bottom stamp · 1986–2000
1988–1992 · 1932 Replica First Release · Bradford
Case / bottom stamp · 1988–1992
1990 · Regular · Bradford
Case / bottom stamp · 1990
1990 · Regular · Bradford · 1932 Yearline Stamp
Case / bottom stamp · 1990
1990 · Regular · Bradford · Japan-market Style
Case / bottom stamp · 1990
1990 · Replica (model unspecified) · Bradford
Case / bottom stamp · 1990
1990 · Slim · Bradford
Case / bottom stamp · 1990
1990 · Slim · Plant not specified
Case / bottom stamp · 1990
Insert references and construction
1986–2000 · Regular · Bradford
Insert reference · 1986–2000
1986–2000 · Regular · Niagara Falls
Insert reference · 1986–2000
1990 · 1932 Replica First Release · Bradford
Insert reference · 1990
Construction features documented for 1990
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.
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
- Vertical insert lettering 1959–1999 · broad · Source: Hardi Döhler
Vertical inscription layouts are common across later twentieth-century inserts; compare typography and code patterns.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
- Both insert faces carry text 1976–2026 · broad · Source: Hardi Döhler
Two-sided marking layouts appear through later insert generations, alongside evolving date-code placements.
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
- Wide cam spring with tapered wheel-side end 1988–2026 · broad · Source: Hardi Döhler
Later springs show wheel-side shaping/tapering; date the insert using inscriptions and other details as well.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
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
- Solid flint-wheel rivet 1964–2026 · broad · Source: Hardi Döhler
Solid rivets become typical from the mid-1960s onward.
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
- Copper-wire-interwoven wick 1980–2026 · transitional · Source: Hardi Döhler
Copper-wire reinforcement becomes common around 1980; wicks are consumables and cannot reliably date a case.
Typical Bradford-made regular lighter; exceptions and overlapping production runs exist.
Known period variants
- 1990 script-logo variant — Known later-production script-logo variant. Known period: 1990. Dating evidence: Secondary dating clue (Construction or material information that may narrow a period. Repairs, replacement parts and production overlaps can change the interpretation.). Sources: Moonlight Zippo.
1990 script-logo variant · Historical reference illustration · Source: Moonlight Zippo - 1990 MADE IN U.S.A. transition — Glen reports MADE IN U.S.A. added from October 1990. Known period: 1990. Dating evidence: Secondary dating clue (Construction or material information that may narrow a period. Repairs, replacement parts and production overlaps can change the interpretation.). Sources: Glen's Zippo Page.
Insert construction evidence
- 16-hole chimney — Introduced during 1946; not useful as a precise clue on later inserts. Known period: 1946–9999. Dating evidence: Secondary dating clue (Construction or material information that may narrow a period. Repairs, replacement parts and production overlaps can change the interpretation.). Sources: Glen's Zippo Page.
16-hole chimney · Historical reference illustration · Source: Glen's Zippo Page - Tapered cam-spring end — Minor cam-spring alteration reported around 1988/89. Known period: 1988–9999. Dating evidence: Supporting comparison (A useful illustrated or photographed comparison. The feature alone does not establish a unique production date.). Sources: Glen's Zippo Page.
Tapered cam-spring end · Historical reference illustration · Source: Glen's Zippo Page - Solid flint-wheel rivet — Introduced around 1961; overlaps hollow rivets for several years. Known period: 1961–9999. Dating evidence: Supporting comparison (A useful illustrated or photographed comparison. The feature alone does not establish a unique production date.). Sources: Glen's Zippo Page.
Solid flint-wheel rivet · Historical reference illustration · Source: Glen's Zippo Page - Additional reverse-side text — Additional reverse text appears around 1975/76. Known period: 1975–9999. Dating evidence: Secondary dating clue (Construction or material information that may narrow a period. Repairs, replacement parts and production overlaps can change the interpretation.). Sources: Glen's Zippo Page.
- Copper-wire wick — Wick design changed around 1980 to include intertwined copper wire. Known period: 1980–9999. Dating evidence: Secondary dating clue (Construction or material information that may narrow a period. Repairs, replacement parts and production overlaps can change the interpretation.). Sources: Glen's Zippo Page.
- Regular insert date code use — Date codes are reported as fully in use by 1984. Known period: 1984–9999. Dating evidence: Primary dating clue (An established factory date code or a directly relevant stamp system. Check the complete marking and model type; it is not a certificate of authenticity.). Sources: Glen's Zippo Page.
Similar years
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.