Hi Michael,
John is quite right about the hallmarks. The presence of a cover over the winding hole doesn't necessarily imply a replaced case, but much more likely that the outer case of the pair is missing and the cover is just an expedient to keep the dust out. Edmunds would indeed have been the retailer who ordered the complete watch from Vale & Rotheram. Interestingly, there are faint hints of a Liverpool influence in the markings on the regulator scale and the flower motifs on the balance cock, but there was some movement of craftsmen between Liverpool and Coventry.
Without removing the balance cock it's very hard to see what's going on with the regulator pointer, which is, as Keith says, a transitional design which provides another clue to the later date.
Regards,
Graham