Unknown 1847 Rogers Bros Fruit Knife

[hpidaves]

I've been through my book and looked online, but I can't find this 1847 Rogers Bros pattern. This fruit knife is marked "1847 Rogers Bros" on the silverplate blade. I'm guessing late 1800s from the look of it.
Thanks.

[hpidaves]

Is it possible these are plain knives customized by someone? I have 6 of these and 3 appear to be wider than the other 3 (see photos).
Thanks.