Suffolk Colt manual is possibly February 1968 print - see picture (the green highlight is on the image only - NOT on the manual).
The Suffolk Colt Mower Four Stroke Engine Operating & Maintenance Manual
1968 SIF Suffolk Colt Motor Mower Operating & Maintenance Manual
OTOTEC 2Pcs 3/16 Inch Lawn Mower Fuel Head Rotary Switch F016L32613 F016L35380 F016L16019 Compatible with Suffolk Colt
Vintage lawn mower decals, Suffolk Colt, never been used,
ATCO SUFFOLK COLT PUNCH Mower Zenith Carburettor Gasket 75cc Cast Iron Engine
Rear Roller Drive Belt Fits Suffolk Colt Punch 12” L08476