That it Ronnie. The middle shop is 103 Linacre Road. As you say that is probably Jack in the doorway trying to keep the scallies from nicking his watches . He and his family lived above the shop He also supplied the main clock in Beech Road school hall. When the school was demolished one of his grandaughters managed to retrieve it and it now takes pride of place in her house.
He also ended up having another shop down Knowsley Road. Thanks for sending the image again Cheers! Obie