ST 105.003

Overview

The ST 105.003 — universally nicknamed the “Ed White” among collectors — is the third proper Speedmaster generation, and the last with straight lugs and no “Professional” on the dial. It is also by far the most plentiful of the straight-lug references, which makes it the most accessible entry into calibre-321 collecting and the reference with the widest spread in quality and price. Its fame rests on a documented fact: astronaut Edward H. White II wore a 105.003 on the first American spacewalk during Gemini 4, June 3, 1965. The same reference survived NASA’s 1964–65 chronograph qualification testing and was declared flight-qualified for all manned space missions on March 1, 1965.

Case

Straight lugs, 19 mm width, no crown guards — the slim pre-Professional profile, about 39.7 mm across the black bezel. The caseback is the screw-down double-step type with hippocampus and Speedmaster engraving. Twisted/lyre lugs are absent; they belong to the 105.012, whose 42 mm asymmetrical case overlapped with 105.003 production for roughly five years — the straight-lug line did not die overnight when the Professional arrived. Rare -64 examples may carry a subtly different flat-sided lug profile, flagged by at least one respected reference as a strong possibility, not a settled fact.

Dial variants

Stepped black dials with an applied metal Omega logo and no Professional text. The lume is tritium, marked T SWISS MADE T at 6 — and on a correct Ed White dial the two Ts sit closely spaced to the signature (“Narrow T”). Long, elegant hour indices are a hallmark; short or stubby indices should raise questions.

The asymmetrical Ts

A documented early-105.003-63 phenomenon: T marks sitting slightly off-alignment, larger, shifted right of the Swiss Made print. Research by the Moonwatch Only authors explains them as Ts added between the initial dial printing and final assembly, right when tritium marking became mandatory — a physical fossil of the radium-to-tritium transition (1963–64). Rare and collectible when genuine.

Soleil and tropical dials

Blue-grey metallic “Soleil” dials appear on 105.003-65s in several catalogued iterations; their origin — tiny test batches or escaped prototypes — remains unexplained, and any claimed example needs a museum archive extract. Tropical browning to chocolate or caramel is environmental and valued, but suspiciously uniform browning across dial and hands alike deserves skepticism.

Bezel, hands, crystal

Bezel: black aluminium tachymeter, Base 500, DO90 with tall “Tachymétre” lettering and the accent over the first E (1962–69 family). Blue-faded inserts are common and broadly accepted as original when natural; later dash-over-90 service inserts are wrong. The pulsations bezel — graduated for heart-rate measurement — was an extremely scarce period option; modern service replacements differ in the marking detail. Hands: white baton hour/minute; painted stick subdial hands; spear-type chrono hand with the pointed “teardrop” counterweight that persisted through the last 145.012 — a quick authenticity check against later hands. Crystal: domed acrylic with the centred Omega etching.

Bracelet

The documented period bracelet is the 7912 with #6 endlinks, seen from -63 through the end of production; the flat-link 1035 appears on later -65 examples. Leather is common and unobjectionable today. The JB Champion stretch bracelet astronauts wore off-duty is period jewellery, not factory equipment.

What to check before buying

• Dial first, always. On an Ed White the dial is the value: stepped profile, applied logo, long indices, close-spaced Ts, no Professional text. This being the most plentiful straight-lug reference, mediocre dials are abundant — don't pay excellent money for a fair dial.
• Lume honesty. Original tritium should be aged and may have lost material from plots — normal and preferable to a fresh relume. Dial and hand lume should be of the same vintage and colour; uniformly glowing “perfect” lume on a 1960s watch is a warning.
• Bezel. Confirm DO90 and tall-tachy lettering; watch for dash-over-90 service inserts. Study pulsations markings closely before paying a premium.
• Pushers and crown. Pushers are 4.5×3.5 mm, crown 7 mm; the early “flat-foot” crown profile is correct on mid-60s examples — modern service crowns are common and should be disclosed.
• Case and stamps. Straight lugs were never sharp-edged to begin with, but heavy polishing still rounds them; verify the caseback date stamp (-63, -64, -65) against serial and movement, knowing factory release could lag manufacture by years — -65-stamped watches left the factory as late as 1969.