#9 Man's Shawl Collar
Pattern calls for 15 balls Rowan Lambswool Tweed or Designer DK. Gauge is using US6 needles; pattern uses US3 needles for ribbing at hem and cuffs.
Yarn amount: 15 balls of either Rowan Lambswool Tweed or Designer DK. This would equate to 2025yd or 1875yd (based on Ravelry’s stated amounts for the two yarns), but it is unknown whether these amounts are original (same timeframe as pattern, 1989) or later.
Schematic shows finished garment width as being 54”.