Vintage Bosch horns 390 520 hz

Set of two vintage Bosch horns in very good condition. One horn has Bosch part number # 0320213010 with 390 hz and the other horn has part number # 0320213011 with 520hz. At the badge is also stamped "7109" "B-02" and "BOSCH GERMANY”. They are for 12V. I tested the horns and they are working very well. One horn has low and the other horn high sound. They are without dents, never had restoration, with screw terminal, possible never mounted and they look like new old stock. The weight is 1500g for one horn and 3000g for both. Made in Germany.