Picture used for the model:
Found at
[medj.com]
After sweeping the retangle:
Here is the result of unwrapping:
Here is the result of unwrapping of the inverse:
[3d model of the inverse]
Here is a painting used for another 3d construction:
Found at
[hof.povray.org]
After assigning polygons:

3d view of the model:

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