Thanks so much. I'll be comparing this to a very poor image of a 28th NYVI private we have been studying; whose buttons definitely do not resemble known Federal issue of the time (May-June 1861). What we have to compare to on that image is actually the highlight/shadow pattern of the button, which does have a relatively "thick" border. If we can match images, we will be able to document evidence that the regiment did not wait for their brass, just like they didn't wait for the Federal issue of weapons (M1841 directly from Remington).