I have a pair of transformers that purportedly came from one of the Fisher X-100 variants, but I'm not too sure about that. The part number is T781-116-1A. They look about the right physical size for use with 6BQ5s or 7189s, and I plan to use them for the next revision of my "No light District " with a pair of 6P14P-EV outputs. Anyone familiar with the part number? I'm going to throw the transformers on the bench anyway and check them out, but it would be nice to know a little bit more about their pedigree.