I have a new in the box, never used Icom FL52A 500hz CW filter for the 455khz IF. This will work in the Icom 718, 707, 736, 737, 738, 736, 756, 751, 761, 765, 775, amd probably a couple more. They sell new for $209.95, I am asking $110 shipped for it, and can take paypal/check/MO. Would always entertain a decent trade offer as well. 73 John AF5CC