[y2kbruce]

WOW-Something has been nagging at me since I saw this thread. I finally figured it out this afternoon.

Note Ron's set (1st picture below) has a total of 21 tubes, 17 on the main chassis. Also note the rows of 4 large cans on both sides of his chassis.

Per The October 1937 Radio News, he (Mr Silver) claimed this new design had the shortest and straightest design and 21 tubes was the sweet spot.

[Image: http://www.philcoradio.com/images/phorum..._00006.jpg]

NOW-Here is my MP VI with a much different serial number than Ron's set has.
This set has only a total of 20 tubes and 16 on the main chassis (there is one hidden small metal tube in the front middle lower side)
AND look at the number of large cans on the upper (left) side:

[Image: http://www.philcoradio.com/images/phorum...CF4906.jpg]

This appears to be a completely different layout using only 6 large cans and one less tube than are supposed to be there.
No name on the back either of the original owner. A mystery unsolved at this time.