[Chachinna]

Hi guys, wondering if you can help me identify these hallmarks?? I’m trying to help my grandfather value his collection for his will. I promised I’d help but have no idea on the topic. If anyone can please help I’d appreciate it heaps? I’ve attached some pics.

 

[spinynorman]

First watch by J.G. Graves of Sheffield, whose career is well documented, for example

Our history | JG Graves Charitable Trust

jggravescharitabletrust.co.uk

The hallmarks are from the Chester assay office and, if the half visible date letter is a B, is for 1902. T.P.H. is Thomas Peter Hewitt of The Lancashire Watch Company. It's missing the minute hand.
Second watch is Birmingham and I think 'l' for 1885. WE is William Ehrhardt Ltd of Barr Street, Birmingham.
You can see what the Graves watch might fetch by looking at sold items on Ebay.