English Sterling Watch Chain and Locket Fob

This heavy link chain measures 13 3/4" from the end to the locket fob. Each link is marked with the English sterling lion passant. The T-bar is marked with the initials H?WC , the lion passant and another mark which might be a Gothic P. The locket is book style and has a horsehead surrounded by a horseshoe and backed by a polo mallet and is marked on the obverse with virtually unreadable makers initials. The interior is marked with the lion passant and a Gothic K. The locket fob measures 13/16" in length and 11/16" in width. I believe this dates to the 1840-1850 era. The entire piece weighs about 45 grams.