Originally Posted by
Elev12k
I checked the 'golden' and the blue 'A-frame':
The golden says 792521, so 1979 - what I expected it to be.
The blue A says P1038

It does not follow the system.
About the blue Presto with P1038: just give the owner of Presto, Loek Valk a call. You can probably reach him on weekdays at the Oostzaan Presto shop.
I'm seeing the former supervisor of the Gazelle racing workshop in a couple of weeks, i'll ask him about a possible Presto-Gazelle connection.