Not positive what radio this works with, but I believe it's an audio filter. Appears to be a 42 contract date, the filter itself is NOS and the box is in rough shape, but the labels there. $25 shipped to a non PO Box in the ConUS.
- IMG_1207.JPG (79.91 KiB) Viewed 143 times
- IMG_1206.JPG (74.84 KiB) Viewed 143 times
'42 M4A1 track
'44 WC63 6x6 (for sale)