
(click on picture for high
resolution image)
This set uses all Daven components, and was built from
articles in the December 1928 and January 1929 issues of Popular
Mechanics. Plans for building the receiver were available for 15
cents from the magazine. Notice the viewing piece,
which can be moved to one of three holes (the first one is visible above
the viewer, the second is behind the viewer, and the third is hidden
under the second one).
The picture on the right shows the set with the front and side open. The
the motor and neon are at the top, with the motor
speed control on the right.
On the right is the 4 tube amplifier, and on the left is a view with
the the scanning disk installed

All the tubes in the amplifier have these labels on them - probably
the owner of the set.