PP.Co silver watch chain with small iviory elephant

i brought this item a silver wattch chaine has a small ivory elephant.

and i think nice quality with age hallmarked with pp.co  a lion and m

it has the lion on every link 

also found this I want to know what its worth

http://en.wikipedia.org/wiki/Patek_Philippe_%26_Co.#Watches_owned_by_royalty