Marler Types
Marler's Type R17
Plates Used: 116,117 (part), 118 and 119 (part)
Marler's Type R18
Plates Used: 119 (part) and 120 (part)
Marler's Type R19
Plates Used: 120 (part), 125-126
Marler's Type R20
Plates Used: 122 (part), 123-124, 129-130
Marler's Type R21
Plates Used: 127-128, 131-132
Marler's Type R22
Plates Used: 133
Marler's Type R23
Plates Used: 134
Marler's Type R24
Plates Used: 142 (part)
Marler's Type R25
Plates Used: 142 (part, 143
Marler's Type R26
Plates Used: 157
Marler's Type R27
Plates Used: 158
Marler's Type R28
Plates Used: 161 (part) 162, 165-166