CF
CPV
FJL
DT
GD
LAC
MPE
Q
SEB
SEL
SER
SET
TBD
UK
Constant (plate) Flaw
Constant Plate Variety
Frame Junction Line
Defective Transfer
Guide Dot
Library and Archives Canada
Misplaced entry of the transfer roll
Question - some uncertainty
Straight Edge Bottom
Straight Edge Left
Straight Edge Right
Straight Edge Top
To Be Determined
Unknown (plate position)
ARC
BBL
Crown
GGD
H Line
MF
MKA
MPE
Major
Notch
PPL
Pitted
SOD
TDL
WGB
White
A compass arc etched on a plate to help align images
Bill's Bucket List
Retouch or Re-entry in either Crown
Giant Guide Dot
Horizontal line in design
(Found on) Multiple Formats
Marks in 'A' (of 2+1¢ Brown)
Misplaced entry of the transfer roll
A Major Re-entry ~ usually listed as such in catalogues
Notch ~ a group of CPVs found on the 7¢ Bistre
Pairs of Parallel Lines
Small, constant marks on a stamp ~ plate damage
String of Dashes (3¢ Brown)
Two Double Lines ~ the 2x2 varieties
Reported by WGB
A constant White mark where the design's ink is absent