I think you have a copy of a 3.8 m off set fed antenna from Prodelin, but I would need more close pictures to make final statements.
Specially from the back part of the antenna, Bolts, the metal structure and the petals....The green paint isn't helping, the antenna normally comes in white
Also I don't know if my eyes are tricking me but I see the antenna is not leveled with the house?
In other words the king post or pole has to be totally vertical (perpendicular) or 90 degrees (right angle) with earth.....
The partial conclusion came out of the back part of the petals see the picture:
The ribs from the back part of the petals have perfect shape, all have same size and are in perfect form in sync with the antenna shape
this is because it is made out of an injection mold, not only plain fiber; when you see a copy, that is the first red flag, it's very difficult to copy when the technique is injection.
In other words, you can try to copy the antenna's surface, probably it will look the same but it will never perform as a mold made antenna....
In order to achieve professional results, the investment is so high that it will be cheaper to buy a antenna from the original manufacturer....