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Hello again Triumphal VI,
Thanks very much for these most excellent images. Much appreciated.
Pedal appears to be some variation of the Lyotard model 460D.
If one looks at the illustration of the 460 in the Portuesi listing it is clear that the pattern of the bridge connecting the barrel to the front ant back plates is the same. The cutouts on the front and back plates also appear to be the same.
The big difference being that the subject pedal has three of its four sides comprised of the single piece of stamped sheet.
The closest thing to this wraparound design in a "rat trap" model is the Nr. 53 shown in the 1937 catalogue pages where all four sides are comprised of a single piece of material.
The newish appearing dustcaps are not a "clinker" for me as these are oftimes lost or damaged in use. Suspect a previous owner simply replaced them.
Note the very nice counterboring at the inner spindle end on the pedals. This is something Lyotard did at one time and then cut back on. Most likely as a cost saving measure. After a certain date most models received a blunt inner spindle end. Do not know specific years for this change.
Have you checked the threading to see if they are metric or BSC? I would expect the odds lean toward metric: 14mm X 1.25. My guess would be that the spindles will interechange perfectly with those of model # 460D. If you have access to a 460/460D you could give it a go.
Unfortunately, despite a good deal of exploration have been unable to find a model name/number for the pedal. So for the time being am thinking of it as a 460D variant.
The Speedplay Museum's illustration for the 460D model, showing a relatively late production example;
View attachment 926136
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