Reference:5504: Difference between revisions

{{DISPLAYTITLE:Rolex 5504 Air-King}}

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|description=The 5504 is the 36mm Explorer-case Air-King — 1957/58 to 1963/64, Cal 1530, "Super Precision" dial, the connective tissue between the 5500 (34mm) and the 1016 Explorer (36mm). 3-6-9 Explorer dial with AIR-KING text. Tropical, honeycomb, and underline-transitional sub-variants documented at major auction.

|keywords=Rolex, 5504, Air-King, Super Precision, Cal 1530, 1016 Explorer sister, 3-6-9 dial

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The 5504 is the 36mm version of the Air-King. It launches in 1957 alongside the 34mm 5500 and runs roughly through 1963/64 — about seven years of parallel production where Rolex offered the Air-King in two case sizes side by side. The 5504 wears the same case architecture as the 1016 Explorer and the 6610 that precedes it: 36mm steel Oyster, smooth bezel, acrylic crystal, Cal 1530. What separates the 5504 from its 1016 sister is dial text and chronometer status. The 1016 says EXPLORER on the dial and runs a chronometer-rated Cal 1560/1570; the 5504 says AIR-KING and runs a non-chronometer Cal 1530. Robb Report's framing is exact: "the 36mm Air-King 5504 was basically an Explorer I with a different dial and hands."

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The architectural relationship to the 1016 is close enough that some collectors treat the 5504 as a dial-swap candidate by default. A 5504 with a 3-6-9 Explorer dial and Mercedes hands is mechanically indistinguishable from a 1016 except for the dial text and the movement caliber — and even the caliber distinction (Cal 1530 vs Cal 1560/1570) requires opening the caseback. Authentication on a 3-6-9 5504 has to lean hard on the dial-side originality verification rather than on case or bracelet evidence.

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The launch year is contested. Rescapement and Marcus Siems' secondary attribution read 1957; Marcus Siems' primary attribution and Robb Report read 1958. The earliest documented 5504 examples cluster at 1957/58 serials — Sotheby's 2020 lot 364 (case 372,245) is dated c.1958, and Eric Wind's documented 5504 examples sit in the 371,xxx case range with 1958 attribution. 1957/58 is the launch window rather than a single year. The reference launches alongside the 5500 in the broader 1957 Air-King catalogue refresh.

The retirement is firmer at 1963/64. Documented examples cluster at serial 949,xxx (mid-1963), and Marcus Siems cites case numbers in the 950,xxx range as late-production. No 5504 dated post-1964 has surfaced in the auction record. The retirement is driven by the Cal 1530 phase-out across the Rolex catalogue — Aggregator coverage of the Cal 1530 transition dates the changeover beginning 1963, and the 5504 rolls off in the same window. The 5500 absorbs the Air-King line forward.

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The 5504 runs Cal 1530 — the same caliber that powers the early 5500 production, the early 1016 Explorer, the early 5512/5513 Submariner, and the broader steel-sport line through the early 1960s. 18,000 vph (2.5 Hz), approximately 44 hour power reserve, butterfly rotor, Breguet overcoil hairspring. Jewel count is 25 in the early production and 26 in later examples (running update across the line, consistent with the Cal 1530 generation as a whole). The full caliber breakdown lives at [[Reference:5500#movement-notes|the 5500 movement notes]].

A small number of late-production 5504 examples are catalogued with Cal 1560 in dealer copy, which notes both Cal 1530 and Cal 1560 across the run. This may reflect service-replacement movements rather than factory-original Cal 1560 5504s — the Cal 1560 is the chronometer-rated 1016 Explorer caliber, and a 5504 with an original Cal 1560 movement would be unusual. A documented Cal-1560 5504 is suspect for service-replacement until factory documentation surfaces.

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The case is steel-only across the production. No precious-metal, gold-capped, or two-tone 5504 surfaces in the auction record. The bezel is fixed and steel and smooth across all surfaced examples — no coin-edge or fluted bezel variant is documented. The crystal is acrylic plexiglass, domed; sapphire-crystal arrives on the Air-King line only with the 14000 in 1989, well after the 5504's retirement.

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19mm Oyster across the production. Period-correct delivery configurations: 7205 rivet with end-link 57 or 58 on early 5504s through the early 1960s; 7206 rivet with end-link 58 or 80 on mid-1960s production. Eric Wind's documented 5504 carries a 7206 rivet bracelet dated to 1966 (clasp date code) — service-era period-correct fitment paired with a 1958-cased head, common across the 5504-era Air-Kings. A documented May-1962 5504 carries a later 78360 Oyster, illustrating the service-era replacement pattern.

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The Domino's Pizza, Tiffany retailer-signed, government-crest (Saudi / UAE / Bahrain / Kuwait), and Joyería Riviera retailer-signed 5504 configurations are not documented. The Domino's program (1977 onward) post-dates the 5504's retirement entirely; the Tiffany-signed dial program existed across the period but no 5504-specific Tiffany lot has surfaced; the government-crest commissions are 5500-era. Their absence is consistent with the 5504's short production window and modest contemporary market position.

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The 5504 is 60+ years old and most surviving examples have been serviced multiple times. The dial restoration window of the 1980s–2000s caught many 5504s; original dials with even minor period patina (silvering loss, applied-marker shadowing, gilt-print degradation) are the originality positive, while perfectly clean dials should be examined as potential restorations.

The movement should be Cal 1530. A 5504 with Cal 1520 (5500-era variant) or Cal 1560 (1016 Explorer caliber) is service-replacement and not original-delivery. The Cal 1530's butterfly rotor and Breguet overcoil are visible inside the case and provide cleaner architectural-anchor verification than the dial-text reading alone.

* [[Reference:4365|Air-King 4365]]

* [[Reference:4499|Air-King 4499]]

* [[Reference:4925|Air-King 4925]]

* [[Reference:5501|Air-King 5501]]

* [[Reference:5502|Air-King 5502]]