Check List & Usage Data
CZSG Check List
- Revised CZSG Check List updated July 2024.
Revised and Augmented Plating Tables
by Geoffrey Brewster- Plating Table 5, Stage I of the Third Series: Revised Table of Plating Characteristics on Scott Nos. 9-10 and 12-15
- Plating Table 6, Stages II–VI of the Third Series: Revised Table of Plating Characteristics on Scott Nos. 9-15 and 18-20
- Plating the PANAMAs of the Fourth Panama Carmine Narrow-Bar Stamps of the C.Z.Third Series
- Plating the PANAMAs of the Fourth Panama Red-Brown Narrow-Bar Stamps of the C.Z. Third Series, with Comparison to the Carmine Narrow-Bar Stamps
- Varieties of the PANAMAs in Form 3 of the 4th Panama Issue on the C. Z. Third Series
- Spacing between Narrow Bars and the PANAMAs of the C. Z. Third Series
- Bar Gaps on Narrow Bars and the PANAMA Overprints of the C. Z. Third Series
- Recorded Bar Gaps of Panama Overprint Form 3 on the C. Z. Third Series
Usage Data
- Census of Canal Zone Second Series Covers (June 2023)
- Earliest Known Stamp Use by CZSG catalog number (August 2024)
- Canal Zone Domestic Rates (September 2022)
- Census of Dated Usage of Type III Overprint issues (August 2024)
- Census of Perf P and PSN Covers (August 2024)
- Census of Handmade Booklets with ABNCo Issues (September 2024)