to the forum!
The 1911-D Quarter Eagle is THE big one of that series. When I looked through Heritage auction archives, that date in that grade has sold for anywhere between $4K and $5K in the recent past.
Here are some links to some very reputable auction houses that regularly deal with high end coins such as yours:
http://www.ha.com/
http://www.stacks.com/
http://www.bowersandmerena.com/


















