Stamp No. Issue date Number issued T22.1 1.10.1966 1,500,000 T22.2 1.10.1966 1,000,000 T22.3 4. 5.1970 3,000,000 T22.4 1.10.1966 1,000,000 11. 7.1968 3,000,000 10. 1.1973 3,000,000 2.10.1975 1,500,000 6.10.1976 4,000,000 T22.5 1.10.1966 2,000,000 10. 1.1973 1,000,000 2.10.1975 3,600,000 6.10.1976 4,500,000 T22.6 1.10.1966 500,000 28. 6.1974 500,000 2.10.1975 1,500,000 6.10.1976 1,500,000 15. 1.1983 2,000,000 T22.7 6.10.1976 1,500,000 15. 1.1983 1,000,000 　　 　　Although the paper used is all 76-lb〝郵〞(post) watermarked paper with red-blue fibers, that used before 1970 is yellowish in color with more red-blue fibers, and that used in 1973, 1974, and 1975 is whiter in color with fewer red-blue fibers. Furthermore, that used for 1.00 and 5.00 stamps in 1975 and that used for all denominations in 1976 is local-made paper and is even whiter and with fewer red-blue fibers as shown in (P-82).　　All stamps issued since 1968 were gummed but those issued in 1966 were not. (P-82).