These were posted from csvff78 on a different Forum.
Thank you csvff7 for the information!
New unit numbers used by Allegheny county police.
91### - 93### Allegheny county police
94### - 95### Allegheny county detectives
96### Allegheny county police sergeants
97### Allegheny county police lieutenants
98### Allegheny county police inspectors
99### Allegheny county superintendents