Thanks, it is a PAM0027B (Tritium) from 1998. The previous series (the A-series) was all Tritium, the series afterwards (the C-series) was all Luminova. The B-series was transitional, some came with Tritium dials, most with Luminova dials. The model was discontinued with the C-series in 1999. Only a few hundred were made over all series with T-dials around 800 and around 3000 with L-dials, so you don't see these very often. The exact number of watches made is not exactly clear because the A- and B-series shared their mile estimation with the PAM0028 (a similar model but then PVD coated and with hobnail dial).