You are purchasing a EN71-3:2019 Certificate for Marthon Thread
Colours on certificate 
1180 - Black
1050 - Red
1200 - Blue
 
You are purchasing a digital download (a certificate which you can add to your technical files to evidence your product is CE compliant) 
 
You can purchase Marathon Machine Embroidery thread from Woodseats Sewing Machine Shop 
https://www.woodseatssewingmachinesshop.co.uk/