Marler Types
Marler's Type SRR4
Plates Used: 80-84 for post office sheets
Marler's Type SRR5
Plates Used: 5-6
Marler's Type SRR6
Plates Used: 7-8
Marler's Type SRR7
Plates Used: 9-10
Marler's Type O1
Plates Used: 1-2
Marler's Type O2
Plates Used: 3-6
Marler's Type O3
Plates Used: 7-8
Marler's Type O4
Plates Used: 9
Marler's Type O5
Plates Used: 10
Marler's Type O6
Plates Used: 11-20
Marler's Type O7
Plates Used: 21-30
Marler's Type R1
Plates Used: 31-35,36 (part) 39-40,43 (part) 45-46 (and many others)