WWII JAPANESE ARMY CASED HAND CRANKED AIR RAID SIREN You are bidding on an original WWII Imperial Japanese Army (IJA) cased hand cranked air raid siren. The case has a metal plate with serial number (8229) and manufacturing data and both the case and siren are in excellent condition. Dimensions of the wood case are 7 ½” in height by 7 7/8” in width. The siren is 4 3/8 “ in width and 4” in height. Please be sure to view all the photos. Authentic period WWII Japanese Army sirens without an original case have sold for as much as $619 on eBay. My reserve is much less This is the only cased air rais siren I have owned in over 25 years of collecting WWII Japanese militaria. Beware of Chinese air raid sirens being represented as WWII Japanese ones. I am a member of OMSA (Orders and Medals Society of America) and guarantee that all my items are 100% authentic. I have been a seller on eBay since 1998. Please check my feedback to see my customer satisfaction.