Hi Kevin,
Not for Vincent series D. I got the name from http://www.cravens.org.uk/catalogue.pdf in the racks section. The racks used on the first carriers which VOC member Ken Craven built for Vincents were rounded at front and rear. I think all of his other products were developed from this.
Thanks for the link mate, Yes I see what you mean and my panniers are Silver Arrow, was going to restore them until I spotted the Stickers/Transfers from the 1961 IOM TT on them!!
Kevin