[fenbach]

I bought the signal generator in the post below but can't identify it. The schematic for a model 088 pretty much matches the circuitry in this one, including the single tube, a 1C6. But this one has a DC power supply built in, while the model 088 needed 2 batteries, a 45 V and a 22.5V. Plus a couple 1.5V batteries, which this one does require. Anyone know what I have here? The closest match in the Philco library is the model 088, link below.
Maybe someone did a remarkably good job of adding the power supply??, because it looks to be factory made.
Thanks

For sale listing: https://philcoradio.com/phorum/showthread.php?tid=25318

Manual for the 088: http://www.myvintagetv.com/Apple%20PDF%2...co_088.pdf

Philco Radio Test Equipment Manual in the philco library: https://philcoradio.com/library/index.ph...nual-1944/