That looks like a Type I. The type II is a lot clearer than the other. That same mintmark on a '79-S is a Type II - LOL! It was introduced later in the year of '79 and became the Type I for 81. Both mintmarks look inverted, just one clearer than the other.
Here's a good link if you'd like to know a little more about it:
http://www.bestcoin.com/Diagnostics...oof-Sets.htm
Here's a good link if you'd like to know a little more about it:
http://www.bestcoin.com/Diagnostics...oof-Sets.htm





















