Section 975(b) in Police Regulations, Bengal , 1943
(b)The mark shall be stamped with printing, marking or other indelible ink or paint on a small piece of white cloth which can be sewn on to the uniform, or in the case of pagris, jumpers, coats, blouses, shorts, trousers, knickers, haversacks, holdalls and caps, the mark may be put on the article itself, care being taken not to cause disfigurement.
