16WP4A ion trap?

[Yamamaya42]

Originally Posted by dieseljeep

All the 16WP4's I seen used a single magnet ion trap.
Even the Philco made 12LP4 used a single magnet ion trap. When I put the tube in storage, I put the trap on to prove it's the proper one.

that Philco must be a unique version, cause my RCA 12LP4 and this listing for sylvania uses a dual trap.
:O
https://frank.pocnet.net/sheets/168/1/12LP4.pdf