Dunn Transitional - known original owner

This transitional period club is stamped W.F.L. It was originally sold at Sothebys many years ago. In the catalogue it states this club (and another) was originally owned by Colonel William Fox-Lyon. A copy of the catalogue entry will be provided with the club. The head carries his initials WFL. It also carries the initials A.M but not sure the significance of those. Made by Tom Dunn.