Year/ Decade 1970’s – It’s after 1972 as the price is in decimal currency, still not from the 80s as half-pence were still in use.
Yarn Size – DK also known as double knitting
Source – Charity shop. I love that someone has hole punched this and kept it in a folder
Surprise Element – a back zip or you can just sew it up at the back. Perhaps so as not to crush the larger hair-do?