This is a post for an RCA tuner of some sort AND some Zenith "modules"...BUT I do NOT think these are modules...from the #' shown..

I see some writing on some--and one has a "blue 21FJ" written on it.

maybe someone here knows what these are--or needs them..

http://www.ebay.com/itm/RCA-Tube-Rotary-Tuner-KRK-29A-and-Zenith-TV-Modules-in-Original-Vintage-Boxes-/222031851967?hash=item33b22131bf:g:rLcAAOSwhAZWBZA H

Below the "blue lateral 21FJ", I see two boxes that say "… knob", and to the right of those the box has written on it "(V/U)HF Tuning Drum" The 3 to the right of that, the 150-1XX, I think are IF modules. I don't know what the 2 on the left are.

The 150 numbers are IF modules. Older hand wired ones.
I dont recognize the S- numbers, they could be almost anything.
Zenith part numbers are easy to ID EXCEPT the S numbers.
Never found out why something earned an S # instead of the
normal system. Example is yokes & flybacks. Some have
95-#'s for transformers others have S numbers.
Someone with an old parts cat can get descriptions.

73 Zeno:smoke: