Here another vintage jumper pattern with an unusual construction. It's from Needlewoman and Needlecraft No. 30 but was also published by Jane Waller in Knitting Fashions of the 1940s. The front is knitted in one piece with a straight centre panel and the two side panels being increased in the middle and decreased on the sides. I have not knitted this myself so can't say how difficult a pattern it is. If you fancy the pattern click on the picture above or go to the Free Vintage Patterns gallery. There are a few more pdfs.