Become an APS member and enjoy up to 50% off the cost of content on the C3a Learning Platform.

To join the American Philatelic Society, go to:  https://stamps.org/join-now

About this video:

A video webinar from 2015 presented by Ron Lesher.

Revenue stamps to be discussed include: prefixes "RB", "RO", "RS, and "RT".

Included are collecting tips and advice.

Video duration:  62 minutes