I wandered down to a junk shop at lunchtime that I heard had some straights and I managed to pick up a matched pair of straights. The only markings on them are "1090" and "Hollow Ground" They have a leather outer case and an inner case.

Looking at them, they are a quarter hollow at best. Perhaps even near wedge. They have bone scales that have a crack in one and a bit missing near the pivot of the other but they are quite stable. The blades are beautiful. About 11/16 in size and virtually no hone wear. They have polished metal wedges. I'd put them at around 1850ish.