I have been trying to identify these bathroom sink and shower fixtures. None of the stores have been able to tell me who the manufacturer is. There is no writing on them whatsoever. I'm trying to replace them with more updated steel or chrome ones, but don't want to have to break the marble tile in the shower to change the valves. From what I can gather, they were installed in the late '80s. Any help would be greatly appreciated!

Attachment 11577

Attachment 11578