Newly registered but have been perusing the site for the last couple weeks to get information about some silver that belonged to my husband's great grandfather's family . This seemed the most appropriate place to post though I have more than a single image. Apologies in advance if this is the wrong place.
I have seen this mark, but my pieces are a bit more worn. I do have some additional information and a couple more images that may help someone place this.
This is one of the forks in the set:

It's about 7.75 inches in some variation of a Tipped/Tipt pattern.
And here is the marking on the reverse:

There was a reference to Prince & Barnum in an earlier Post:
Subject: Identification needed, "? and Barnum" and Hallmark
http://www.925-1000.com/forum/viewtopic.php?f=3&t=5756&p=11595&hilit=coles#p11595 The image was determined to be an Albert Coles pattern but the image is no longer available.
But this response to that post sort of brought it together because great-grandfather-in-law was living in Galveston around that time:
silverly wrote:Prince & Barnum advertised in the Galveston Daily News between from 1866 to 1868 as Jewelers and Watchmakers at 170 Tremont Street.
Many thanks!