Faringdon H Waltham Mass Silver Pocket Watch

[lewek]

my dad has recently acquired a faringdon H waltham mass silver pocket watch, serial number:4141929 and hes wondering how much its worth?

[lewek]

The watch came to my dad without a box and without a key,it is in good condition but as yet we do not know if it works.the rear of the case is hallmarked as is the inner case, below the hallmark AB the number 724 is stamped and on the outside there is engraving in the form of a crest. The hands on watch face are blued effect,Can anybody tell me anything about this watch please? I will try and upload photo's later thanks