3 symbols ( crab, anchor, C with a B inside) followed by etched " 500/21". Hopefully I put this in the correct category. Thank you



https://i.postimg.cc/Dy3ZXxgR/Spoon-back-symbols.jpg
https://i.postimg.cc/hPJMTR7B/Spoon-front.jpg
https://i.postimg.cc/KvmsMHDc/Spoon-back.jpg