scott number anomalies

Scott numbering anomalies.

Not so much anomalies as it is that the Scott number system has changed over the years.  This page is to help in assisting the collector in knowing where those changes occur.

United States

Issue Old New
1887 1c Franklin-ultramarine, perf. 12 #214 #212
1921 1c Washington-green, perf. 10 #544 #543