Siren from personal collection. According to the former owner Serena was Hayden in Arroyo in airfield Gumrak. After the war, perhaps was used in the fire service in Stalingrad.
— 10 USD by Russian Post
— 25-40 USD by courier service EMS
— 30-40 USD by Russian Post
— 40-60 USD (depends on customer's country) by courier service EMS
What is the difference between Russian Post and EMS courier service? Read here - link