Year – 1970. I can be quite precise because this is in both pre-decimal and decimal currency so it’s from 1970, or 1969 if they printed them that far ahead or 1971 if they put both prices on things for a while.
Size 38, 39, 40, 42, 44 inch chest
Yarn Size – Model A is DK or Model B is 4 ply
Unusual Qualities – It’s the type of sleeveless waistcoat cardigan every Grandpa need to wear to point at things. Also that car in the background is just studio backdrop.