Hi Christopher thank you for writing in with the following question:
"It is an old pocket watch with 5 stamps on the inside including:
An Anchor
A non capital b
A Lion
The letters C.H.E
and the numbers 353
Hope you can help!"
C.H.E was the Birmingham maker's mark used by
Errington Watch Co. - CHARLES HUTON ERRINGTON (Watch Cases, Birmingham, UK) - ca 1880s - 1930s
To get the exact year between 1880 and 1930, compare the lower case b with the letters in the Birmingham date letter chart. - (the link is n top right hand corner of page)