I see what looks like a cast copy (or perhaps badly sea salvaged) Philip IV, 1627 (looks like 1622), one real of Segovia (Aquaduct mint msrk with two arcs)and assayer P. There is such a thing but it should have cleaner and finer design details in the less worn spots. The legend seems off (letters non radial) and lacks proper spacing compared to images of the real thing (the "V" of "Philippvs" should be aligned with the bottom of the shield for instance.
























