The serial number should make it a 1987 or 1988 model and that is consistent with the double bottle bosses and pump peg. However, the 1987 had chromed forks while the 1988s did not, so it should be a 1988. The two 1988 models with that chrome treatment on the stays were the Chorus (Reynolds 753) and the Sante (Reynolds 531SL). None of the components would be OEM for either model, so that's not much help. Both frames had identical geometry and features so the only way to distinguish them would be if there was some overspray from the original color, inside the head or seat tube, or on the fork's steerer.
Curiously, the 1987 PX10 was equipped with Mavic but the frame was Columbus SLX. Still, the chrome coverage doesn't match. Regardless, a quick check inside the bottom bracket for the distinctive helical ridges in the tubes, will confirm or dispel SLX.
All this assumes it's a North American model.