Section 4(3)(b) in The Punjab Passengers and Goods Taxation Rules, 1952
(b)If the original certificate or registration granted under sub-rule (1) or duly authenticated copy thereof granted, under sub-rule (2) has become defaced or illegible the owner shall return to the Assessing Authority with an application for the grant of a duplicate copy of the certificate or an authenticated copy thereof, as the case may be, which shall be granted free of charge.