Located at the village of Rock, about three miles north of Osborne Store

Near the Mocho Mountains in western part of central Clarendon

Cancel Type	Potter No.	EKD	LKD	Cancel Notes
Temp. Rubber Handstamp. Type - O3*/38	330.01	14.4.1949	9.5.1950	Date inserted in manuscript blue ink up to November 1949
Temp. Rubber Handstamp. Type - O3*/38	330.02	27.1.1950	27.1.1950	Differs from 330.01 in that “JAMAICA” is much shorter and asterisks are below centre line.
Registered Oval Datestamp	330.03	20.4.1950	15.10.1955	“REGISTERED” defaced when first used but in MAy 1952 defacement was removed and ink changed to black.
Modern Single Ring	330.04	10.4.1956	14.1.1967
Temp. Rubber Handstamp. Type - O3*/37	330.05	24.2.1967	28.5.1972	Lettering is in upright serif as compared with 330.01/02 where lettering is slanted.
Modern Single Ring - 68 (with *)	330.06	23.8.1968	24.5.1988