Anyway the News release did mention that Jonathan Dillon was the only Unionist in the watch shop. And L.E, Gross seems to have had plenty of reason to place his own inscription in Lincoln's Watch, after he observed that Dillon had already many his personal feelings known back in 1861.
Seems like the Smithsonian should hire you to tell "The Rest of the Story" (my tribute to Paul Harvey) since they seem to be only interested in releasing that part of the Watch story which is politically correct to maintain the myth that Lincoln was the "darling" of those in the North. It would seem that even in 1864 Washington D.C. was still full of average everyday ordainary plain people who did not like Lincoln and therefore were those nasty "Southern sympathizers" which so plagued the Lincoln adminstration.