The characteristic you are describing—where the tritium lume plots are large enough to physically overlap or “eat into” the white hash marks of the outer seconds track—is primarily a feature of Step Dial Speedmasters.
Why You Can’t Find It on the 3590.50
The 3590.50 (produced approx. 1988–1996) uses a flat dial. On these later dials, the lume plots are generally smaller and positioned more centrally, leaving a clear “moat” of black space between the lume and the seconds track.
1980s and 1990s Models
While the “eating into the track” look is most extreme on vintage references like the 2998 or the 105.012, there are specific transitional and late-era tritium models where the lume plots still sit very close to or slightly touch the track:
Early Ref. 145.022 (Late 70s to Early 80s): The early “Long S, T” dials often have larger, more “pill-like” tritium plots that sit right against the seconds track. While the dial is flat (no step), the plots are often larger than those found on the 90s-era 3590.50.
Ref. 3592.50 (Apollo XI / Gilt Movement, Early 90s): This is the sapphire sandwich precursor. Some early “Yellow Gilt” 861 versions from the very early 90s feature tritium applications that are noticeably more generous and “bleeding” into the track compared to the standard 3590.50.
Ref. 3594.50 (R0503V / '57 Re-issue): Though this model uses Luminova (released in the late 90s), it was specifically designed to mimic the 2915/2998 aesthetic, featuring the large lume plots that intentionally overlap the seconds track.
Classic References with “Overlapping” Lume
If you are looking for that specific vintage “bleeding” look, these are the primary targets:
CK 2915 & CK 2998: The most aggressive examples where the lume often covers half the length of the seconds hashes.
105.002 / 105.003 (“Ed White”): These pre-professional models consistently feature large, tall lume plots that “eat” into the track.
105.012 & 145.012: The last of the Step Dials with Caliber 321. The “step” creates a natural boundary, but the tritium is almost always applied so that it touches or overlaps the inner edge of the seconds track.
Als ik dit zo lees, dan is de dial op deze Frankenstein Speedmaster in de advertentie niet vanzelfsprekend / wel zeldzaam, toch?