The Workbook, Notes on reprints and forgeries of Colombian Stamps

Part III, The Colombian Airmails

Plot

CONTENTS
First Experimental Airmail 1919
Introduction 1
Types 1 -10 2
Guide to identify Forgeries 12
Compañia Colombiana de Navegación Aérea 15
Scott C2 - C10 22
Guide to identify Forgeries 53
The Flights of the CCNA, Philatelic Evidence 54
CCNA, 2nd. Issue 76
CCNA, 3rd. Issue 85
CCNA, 4th. Issue 90
SCADTA - Introduction 108
SCADTA, 1st. Issue + Provisional Surcharges 109
FORERO Reprints - Forgeries of 1923 132
SCADTA, 3rd. + 4th. Issue 139
How to detect Forgeries with the help of the computer 144
The SCADTA handstamped "R" Provisionals 157
SCADTA - Consular, Introduction 178
SCADTA - Consular, Tests 180
SCADTA - Consular, Examples 184
SCADTA - Consular, covers 215
SCADTA 1923 Provisional 221
SCADTA, Mendez Issue 222
SCADTA, 1932 "CORREO AEREO" Issue 223
SCADTA, 1st. International Flight, Ecuador 225
AVIANCA "Provisional" 226
LANSA, Introduction 227
LANSA, Examples 228
Bibliography - References 238
Publications 239