The Galazan Silvers-style looks great and comes in both 1" and 1 1/2" if you need more LOP. http://www.connecticutshotgun.com
I like the Brownells London Guns English-Style Recoil Pad Item # 535-300-100 (large) It has more 'give' than the Silvers. The Pachmayr Old English D752 doesn't look quite as 'age appropriate' but definitely absorbs recoil and comes as thin as .6". Check http://www.brownells.com