On box it is in is written “Fusee” 18 K half hunter case with raised glass bubble partial view of face. Inside of the outer dust cover has four stamps PLUS a box with “18” in it for 18K. some key scratches on both holes for posts to set and wind watch.
Main plate is inscribed with the following;
• 104785
• 10 Bunhill row, London
• Cozens Matthew& Thorpe
Inside and outside dust covers have same serial number as main plate – 104785
Stamps on dust cover are “18”, Lion or Shield, “P”, JW in oval with L below, Crown
Watch weights 120.9 grams
Full diameter 51.57 mm
Mechanism only diameter = 42.3 mm

(how do I add more pictures?)

Thanks Dr. Debbie!

request other pic via post (now I know how.....)

Nice watch

Have a look here for information http://www.925-1000.com/british_marks.html