Based on my measurements, and your user friendly site, this appears to be a 32-809.
Seem to be no markings other than R and L.
Appreciate your web site...clear photographs & measurements.
Bob from SWISCO responded:
August 13, 2020
It's a bit tough to tell from this view. The best thing to do is to compare the size and shape of the gap that accepts the track. See our 32-119 as well as the 32-089. Let me know if one of these match with that crucial dimension.