13mm and 11mm dovetails???

[Muskett]

OK, we all know the standard scope dovetail is now 11mm. What guns had 13mm? When was the change? Or was it always some of each?

I know earlier HW35's had 13mm, what else? Airsporters, Webleys???? Or BSF's?? What rifles have the 13mm scope dovetail rails?

[Rickenbacker]

Modernish BSAs with the 'MaxiGrip' scope rail have an annoying 13 ish mm dovetail

[I. J.]

Ive never seen a BSF with 13mm rails.

[Muskett]

I.J. when did HW stop their 13mm on 35's and do all 55's have them or not?