sliding glass door handles/locks for 50's Eichler?

I have a 1950's Terra Linda Eichler that has one shot patio door slider handle/lock. I would like to replace it with matching handle or replace all four with something that matches or fits the Eichler design... Any ideas? I found the reference to Arcadia doors and though not a match, it would work...other ideas? It a rectangle, with the left side being the lock and the right side being the hangle, ours are black, but I think they started out "brassy". I love all the glass, especially in the spring/ summer.
Thanks!