RCA AR-60.....

However:.....

We discovered that our AR-60 has a different valve set-up.
Instead of the tubes 6C6, 6D6, 6B7 etc the following tubes are used: 6K7,6F7, 6B8 etc.

Also added is an output limiter; on the front is the 5 position output limiter switch visible.

Clearly visible the extra parts for the output limiter. (Right-below)

Any help very much appreciated!