Thanks, I knew "Zerk" was wrong and tried to google it up quickly to correct, but ended up hitting other misspellings. Fixed.
Again, though - I was also interested in the general case. If factories are making frames out of old molds, or selling unmarked frames out the back door, etc. - I'd think there are people here who are knowledgable and interested enough to ID them. From the responses here, that seems to not be the case. :shrug: I've been wrong before, just a little surprised.
KeS