Most 382 owners like Bruno expressed their disappointment when Panerai announced a second Bronzo model. And most 382 owners also say their watch is better, has a cleaner dial, was the first, etc. So why would they even want a 507? I think we can argue against it being collectible - it is the second and there is no reason to assume Panerai will stop using the material. So unless someone loves the watch that patinas so much that they want virtually the same thing, I don't see the need for 2.