Big congrats on your first Shield! I remember my first one, it was an accidental find! I was chasing a wheaty signal in the hole, after recovering it, I re-scanned the hole and heard a gold/foil/nickel tone I didn't hear originally and about three inches deeper I pulled my first Shield Nickel. It's in fair condition although I can't get a definitive date 188? On 1-4-15 I found my 2nd one at a new field site, it is an 1866 with rays! I used an sos pad to clean it. they are pretty tough and can take a good scrubbing, but if you decide to use this method try it on another junk nickel first and determine if you like the result.
Here's hoping you find many more!!