This is my version of the current 5 1/4″ American-Darling B-62-B-5. Introduced in 1962 (hence the model) it is still a current design.. I used an old CAD file that I had created for Shapeways with a hollow tube (the ‘theory’ was that a modeler could insert a length of wire into the hollow to make a mounting pin. While the part you see came out fine the pipe that extends underground and the bit that will be glued down came out “stumpy” .. works but Ver 2 will have the hollow removed.
This is offered up as a set of 19 ea