found in south florida while metal detecting a backyard of a 1940s house. roughly 6 inches deep next to a large mango tree. The rattle is magnetic but the bell is not. The reverse is held with a cotter pin. I cannot find any info on the lettering on them, it looks like it says “No 0”. Any info or hints in the right direction is appreciated. i believe i have 8 in total, some were missing cotter pins and were actually a few feet away from the part shown in my pictures.