Reference:3548: Difference between revisions

<small>[[Reference:bubbleback|Bubbleback]] -&gt; '''3548'''</small>

The 3548 is one of two standard references — alongside the sub-seconds 3716 — built in the case style collectors call the "Empire" Oyster: classically round, 32mm, but with elongated, rectangular, sloped lugs distinct from the hooded-lug treatment most Bubblebacks of the period carry. Specialist research on Rolex's early Oyster case history documents the type as chronometer-certified and automatic throughout, placing it firmly inside the Bubbleback family despite the case's unusual silhouette.

| self-winding, chronometer-certified

"Empire" is a collector name, not a Rolex one, for a specific case profile: round rather than tonneau, but with distinctively elongated, sloped, rectangular lugs in place of the hooded-lug style common across the rest of the Bubbleback range. The 3548 is documented as the centre-seconds standard reference in this case style, paired with the sub-seconds 3716; a rose gold variant of the same case appears on the related 3877. All are documented as 32mm, round, and automatic — the "bubble" in Bubbleback refers to the domed caseback the automatic rotor required, present regardless of the lug treatment.

A steel example sold at Antiquorum for CHF 9,375 (lot 477); a second steel example, movement no. 93792, dated circa 1943 by Bonhams, sold at the house's Paris sale on 24 May 2022 (sale 27810, lot 268) for &euro;3,570. A rose gold example of the sibling case style (ref. 3877) sold at Antiquorum for over 50,000 CHF against a 6,000&ndash;10,000 CHF estimate — more than five times its high estimate — underscoring how sharply the market has moved on well-documented "Empire" case examples in recent years.

Self-winding, chronometer-certified. The Bonhams-catalogued example specifies a jewelled automatic movement, numbered 93792.

The Bonhams-documented example carries a salmon (orange-toned) dial: black Arabic numerals for the hour markers, a black outer track dividing fifths of a second with Arabic 5-minute markers, blued steel pointed baton hands, and gilt centre seconds — a notably colorful dial treatment next to the silver and black dials more common across the wider Bubbleback range.

32mm round stainless steel case, brushed and polished finish, screw-down case back and crown, and the elongated rectangular sloped lugs that define the "Empire" style. Rolex's earlier manually-wound Oyster cases of this general period showed considerable variability in shape; the automatic "Empire" Bubblebacks were built to this one consistent silhouette.

* [[Reference:3353|Bubbleback 3353]] — same broader generation, tonneau case

* [[Reference:3131|Bubbleback 3131]] — earliest automatic reference, same family

* [[Reference:3133|Bubbleback 3133]] — same era, pink gold and steel