The back cover page is covered with the factory labels that came with the bike

HONDA  C90  1971  Factory Parts List Manual

AT1MX 1971 125 AT1MX Enduro Dual-Purpose

CB450-K6 1973 450 Super Sport 450 Street

40 pages   # A257

YAMAHA DT175 Ignition Contact Breaker Points Set 443-81321-10 SUZUKI GT250 GT380 TC305 TS250 T125 T250 T305 T350 T500 Ignition Contact Breaker Points 31440-15020 The back cover page isYAMAHA Ignition Contact Breaker Points Set OEM Ref. # 443 81321 10 90 0024051400 90 00H8500 NOS New Old Stock. B1 21 L Fits DT175A 1974 175 DT175 Dual Purpose DT175B 1975 175 DT175 Dual Purpose DT175C 1976 175 DT175 Dual Purpose