I am stumped. I will remain silent and be thought an idiot rather than comment and remove all doubt. Looks British but the proof marks don't jive. The Spanish seguro for "safe" is a mystery. P. Webley and Son is a real live marking for guns produced by Webley prior to the Webley and Scott merger. B. Webley and Son is obscure. Sometimes Belgian makers changed a letter or two in a popular name brand to make a sale, but this gun seems higher quality than the general run of those. I honestly do not know about this one.