Collins filter

Fred E Holnagel w7prv at JUNO.COM
Sat Jan 15 22:00:20 EST 2000

Anyone able to identify this one.  About 1/2" w X 5/8" h X 2 1/2" long.
Has three pins each end and two bolt mounting. Markings are Mechanical
Filter, F455 FA 21 6831.   Also 526 9427 00 Black in color.  The 455 is a
clue as it is an IF freq.  Thanks for any help.

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