Sarawak. (Singapore). 1948. Registered Air Mail envelope addressed to London bearing Sarawak SG 147, 15c blue and SG 148 50c black and scarlet tied by Kuching date stamp '30th Jy 48', with framed 'R/ Kuching/ No (10312) on face in violet, routed via Singapore with bold 'A.V. 2' hand-stamp in red on face and Singapore transit on reverse '1st Aug'.
Ted Proud lists the 'A.V. 2' large type hand-stamp as used in Singapore (23.8.48) - (1.11.48).