Argosy model 224 audio filter wanted

[turner@safety.ics.uci.edu (Clark Savage Turner WA3JPG)]

Anyone know a source for the model 224 CW audio filter for the Argosy
series transceiver?  I finally found this rig, have wanted one for 
a long time, and find it does not have the audio filter, which I 
would really like to have.

Similarly, I would like to find the model 220 2.4 KHz crystal filter
for SSB if anyone has one of these around.

Neat little radio.  Really neat.

Clark
WA3JPG