Hi Phil, thanks for your reply and suggestion. I looked up William Lukin in Grimwade and I can only see William Lukin I and he's Grimwade 1966, entered 31 July 1699, but his mark is different. Which reference book were you looking at? (or perhaps you have a Grimwade number). Cheers!
I'm also attaching smaller hallmark pictures right here as the moderator thought my original ones were too large and just added links - perhaps forum members would find it easier to just see the smaller photos here. Any help would be appreciated!
![Image](http://i614.photobucket.com/albums/tt228/ZoomKa77/Cup1_zpstxwqq9rt.jpg)