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APS Affiliate Number 42
Canal Zone Study Group
Organized in 1952 to promote the collecting and study of the stamps
and postal history of the Canal Zone and the Isthmus of Panama
APS
Affiliate
#UN0042
APS Affiliate

Check List & Usage Data

CZSG Check List

  • Revised CZSG Check List updated June 2016.

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 (May 2021)
  • Earliest Known Stamp Use by CZSG catalog number (September 2022)
  • Canal Zone Domestic Rates (September 2022)
  • Census of Dated Usage of Type III Overprint issues (December 2020)
  • Census of Perf P and PSN Covers (June 2021)
  • Project: covers needed from 18th Infantry Brigade, 1939-1940


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Updates and/or corrections, please contact Larry Fillion
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