Manhasset is a franchise store so your purchase history there wouldn’t show on Wall St. That being said, can’t hurt to reach out to the SA that helped you at Wall and then also go to the manhasset location and start building a relationship there as well.
On the c18, we were offered one just as walk-ins to Madison Ave. before they even looked up our profile. They aren’t that ultra-rare. Now though with the lockdowns in Europe, inventory seems to be getting low everywhere so there are no guarantees