Vintage metal wheeled mechanical pulley and hooked pulley.

This item is pair of solid silver hallmarked slat and pepper pots. They are hallmarked Birmingham 1911.The pieces have some tarnishing and minor indentations but overall are in very good condition. The maker's mark is either P.S.B or R.S.B. Difficult to decipher.There are set of initials on the ...

have no idea what this is, my friend told me it warded off spiders as they hate the nuts in the box. I've had it for around 30 years and it came from my Grandma but where it originates haven't got clue but ask questions, happy bidding ...