I note that the Allparts pickguards vary slightly, though for Gibsons. The cream 1-ply pickguard has 45.5mm neck pickup ring cutout and the black and pearloid 3-ply guard cutouts are 44.5mm. Looking on the Allparts site, they give the Gibson rings as 44.3mm wide.

What colour rings and pickguard are you looking for? Cream I assume!

Always worth measuring the ring and cutout width and see if they match the stated dimensions.