Type SRO3. A break at the top of the vertical line of the right numeral box and a second break about 0.5 mm below it.
Marler Type:
Plates Used:
Earliest Reported Use:
1912 Q
Coil Type SRO3 and Sheet Type O5 are the same. All the Type SRO3 coils and a portion of the sheet stamps come from plates (13-14).