NOTE: This is for the FT-847, it may work in other radios but be sure before you buy it. 

RARE, hard to find, Yaesu/Collins  YF-115S-02  2.5Khz SSB Mechanical filter in Perfect shape.  Marked as the XF-115S (per Yaesu), this excellent filter is used in the FT-847 and perhaps others.  This is a “must have” for the serious SSB user. Simply plugs in and you are ready to go. Buyer pays shipping for a well packed box. Buy from me with confidence as I have excellent feedback!