Interesting and very cool find. I have no idea if there were any other mixte Limiteds made - this is first I have heard of one. I am mildly surprised the Limited line would include a mixte version; I would have expected any such things to be in the custom "A" line, but that is definitely a Limited BB shell, not the kind used on the As. The way the seat stays are joined is not standard Eisentraut - neither As nor regular Limiteds were joined that way. They more like a Bruce Gordon style - not identical, but similar. And since Bruce Gordon cut his teeth building Limiteds . . . . well, that's starting to get into the realm of pure conjecture.
And no, I am not an Eisentraut expert. Jus a fanboy who is fortunate enough to own a 1978 A.
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