My last upload of this image got a bit buggered up - This time around I added a small version of the coin in case you're like me and your sprites are also 16x16 and you need tiny coins. This image is split down the center - left side has no shadow, right side has a shadow - Each individual image is has a small pixel denoting the bottom left corner, so you dont get lost in the 32 separate images. 

Gif of the small coins - no shadow

 pic.twitter.com/VcgysNeblp