This is a John Waddington LTD deck. Name unknown – Cowboys is of my choosing. It almost certainly belongs to the same Waddington for Wills series as the Camel deck shown at 491 here (and in the Gallery) https://www.wopc.co.uk/members/ken-lodge/waddington-part-one It did not come in a tuck but was still cellophane wrapped in a Duty wrapper. I believe it to be authentic but do not know for certain