Any thoughts on this one? Say Murphy Dublin on the back, and something "court" which is part of the address. The pic doesn't show it well but the button / badge is silver coloured, and it looks like an eagle - or maybe a griffin?
Thanks - the back is pretty degraded and won't photograph well, but I think Hoeys's Court might be right - my picture doesn't show the colour very well, but the silver colour of the front of the badge / button is quite well preserved and strong, although I don't think it's silver.
Welcome bigjerryok. Will really help it you put something to reference size. A set of calipers is a great investment as you try to get an ID's on your finds and aren't very expensive. Read the stickies in the "what is it" section and it will help. Hope to see many more posts. Sorry I can't help on the ID
At first glance, the spread-winged eagle makes your button resemble an American military button... or a US Government Official & Diplomatic Service button. (See the Albert book's "OD" section.) But in actuality, it is a Livery button. Note that the eagle is NOT holding an olive branch or arrows in its talons, doesn't have a Federal Shield, nor stars around it. It is "just" an eagle (or similar bird)... and it is displayed above a Torse, which is a symbol frequently seen on Livery buttons. A Torse is a spiral-bodied wreath seen laying HORIZONTALLY below the main emblem. (In other words, it is a "side-view" of a wreath.) A Torse is not "the ground" under the main emblem, or in this case, the eagle. The photos below show Livery buttons which have a Torse under the main emblem.
For anybody here who doesn't already know:
Livery buttons were primarily European, and they showed the Family Crest of a Nobility (or merely wealthy) family. They were made for use on the uniforms of the family's household servants, such as butlers and coachmen. Livery buttons date from at least the 1700s and are still in use today.