Actually I just listened to a collection of jingles which I have. It is cut #2 in the “Coastin Through” Package which came out from JAM for KOST 103 in 1987. WKQC “K 104.7” uses this package as well.
KOST appear to have some sort of rolling deal with JAM for playing cuts from their custom projects over the years. When the change was made from KOST 103 to KOST 103.5 some of the earlier cuts were resung adding the 'point 5'. Maybe Jon could clarify…..