Started as beginner in mid-70s.
1979 1st league was low B - not usta league but probably like 3.0-3.5.
Officially reached 4.5 in mid 80s and did very well.
Played 2 seasons 5.0 in late 80s and won about 40% before team broke up due to poor performance. This was pre-internet and I am not sure if my official rating was bumped or if we just moved the whole team up because some on the team were bumped. We were 2nd in state in 4.5 the season before.
Now, 56 years old and play A ALTA about like 4.0 USTA and working hard to maintain level.