I bought an 1854 today at my friend's shop for next to nothing because I liked the color on it, though it isn't evident by the scans provided. When looking through the Grellman book I was unable to attribute it based on some of features I was seeing. If you can see them from my pics, on reverse on the N of UNITED on bottom left stand there is a raised curve starting at top of base of lower serif and extending out and back almost to middle of stand. Looks like the top of an 8. Also on reverse on the T in UNITED on the left crossbar on it's top left there is a notch with a tail sticking up past the top of the crossbar but not extending as fat as the dentils.
Aside from these characteristics I found nothing else to help in diagnosing it. Any help would be much appreciated.