This from Tom Podraza:

Found on the Mack CF facebook page.. Former Belmont FPD later Darien/ Woodridge  1975 mack is being auctioned

1975 MACK Fire Truck – Serial Number CF611F1732

1975 MACK Fire Truck - Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck – Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck - Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck – Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck - Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck – Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck - Serial Number CF611F1732 for sale by auction

1975 MACK Fire Truck – Serial Number CF611F1732 for sale by auction