A useful paper comparison
Double Sunday lists 108 m per 50 g and 20–21 stitches per 10 cm. Daisy lists 110 m per 50 g and 21 stitches by 28 rows over 4 inches / 10 cm. Both manufacturers identify non-superwash wool, with merino specified in their product material. The close lengths and shared 21-stitch point make a swatch worthwhile, but their construction has not been verified here.
Do not hide the gauge disagreement
Mother Knitter’s Double Sunday listing gives 21–22 stitches, while Sandnes’s current primary page gives 21–20 in that order. This directory uses the primary page for its filter and preserves the retailer disagreement. Check the ball band you are actually buying and the pattern’s target; do not assume that either published range guarantees your result.
Care differs in the published guidance
Daisy specifies hand washing up to 30°C / 86°F, flat drying and feltability. Sandnes gives separate wool-program machine-wash guidance with flat drying. Use the instructions for your actual yarn. Matching fiber content does not justify treating care instructions as interchangeable.
Which direction helps a US shopper?
Mother Knitter provides a checked US listing for Double Sunday. We have not established a US retailer listing for Daisy in this launch dataset. That makes Double Sunday a US-sourcing candidate for a Daisy pattern, provided the washed swatch works. The absence of a checked Daisy listing here is a research limitation, not a claim that no US seller carries it.
Specification sources: Sandnes Garn Double Sunday. DROPS Daisy. Sources and retail evidence are detailed below. These are desk comparisons; no physical testing has been performed.