I like that the Branded name is stamped clearly, so you can read it even in low light.
801-12C-28 T-BAR Power Relay, 12Pdt, 28Vdc, 5A, Plug In
It is refreshing to see the NVX branding present, because it lets you know exactly what you are holding.
You will find that it has the Brown Boveri Electric Inc. branding, which I think to the part.