No trust me my dime is not brown looking it was my darn phone camera that makes it look brown the back looks just like the front of the dime
Here's the back of my dime it took me a bit with my phone camera to get the right color but I got her lol
I have the same thing in my 1975 no mint dime except on the heads side it has a line stamped from just above the bottom of his neck to the back of his head a through the head just under the top of his head I'll post a pic of it here in a lil bit