1800 series

[Bob Rathke]

I have a very obvious question, one that HAS to have been asked before:

Why didn't PAT renumber the latest PCC rebuilds in the 1800, rather than
the 4000, series?

Better yet: back in the 70's, instead of the confusing renumbering of
1600s to the 1700 series, why didn't PAT simply renumber those rebuilds
in the 1800 series?

Could it be that they just didn't think of this alternative?

Bob 1/4