Vintage Sheffield horloger du Roy watch pendant necklace Beautiful it’s ticking

Beautiful vintage piece I have not used this after I bought this in the late 1990s ..its by Sheffield as marked .. Horloger du Roy ( royal watchmaker) .. it’s mechanical and it’s ticking as in any vintage watches please have it serviced! Do not over wind ! The watch pendant measures approximately 1.2” across the chain is 26 inches end to end and with 13” drop What a beautiful and unique watch .. the original antique store tag is still attached $38