It's a Tivoli Model Two. Cute little sucker and it works well. The source switch was flakey but some contact cleaner seems to have fixed that. Also 2 or 3 of the plastic posts inside that take screws to hold it together were broken. Maybe it was dropped at some point? Anyway a little epoxy and futzing around and it holds together. It's a good tuner which should be no surprise considering the pedigree I guess. It seems like a good addition to my collection considering I have an Advent 300 and 400. It was kind of neat picking this from the Craigslist ad; it turned out I used to work with the original owner.