Sheffield City/City of Sheffield/ S Wales Constabulary

[billy4294]

Good Evening,
Can anyone tell me why the Sheffield City and City of Sheffield Police titles seem to have both been used in KC/QC ? and which wording was used first? Also, the since the centers of the badges were different (coat of arms and shield) was the shield ever worn as a collar badge, as the coat of arms was? Re the South Wakes Constabulary. Which center was used first on the wreath cap badge? POW feathers or ER? and when was the Constabulary title dropped/

Thanks in advance
billyh