Type 1
				Type 1a
				Opened by dimensions: 79mm x 8.5 mm
				Examiner dimensions: 52mm x 8.5 mm
				Type 1b
				Opened by dimensions: 79mm x 8.5 mm
				Examiner dimensions: 52mm x 8.5 mm
				Additional notes: Numbers printed separately
				Type 1c
				Opened by dimensions: 79mm x 8.5 mm
				Examiner dimensions: 52mm x 8.5 mm
				Additional notes: 51-2116-G. W. D. printed in upper left corner
				Type 1d
				Opened by dimensions: 79mm x 8.5 mm
				Examiner dimensions: 52mm x 8.5 mm
				Additional notes: S. & Co. 51-1524 printed in lower right corner