With all the collectors of vintage war items does anyone have any information on availability of WWII air raid sirens such as the Carter dual tone siren? They seem to be very hard to find here in the US with greater availability in the UK but at high prices (especially with shipping, these things are heavy). When I entered the F/A 1919 arena I thought I found the ultimate hobby to empty my bank account, seems I may have located another money pit. If anyone has info that could steer me towards one I would appreciate it. Functional or not is fine I am looking to restore one, thanks guys.