There are a number of years that have the double ear lobe. Most are pretty obvious when you spot them. If you're getting tired while searching just reference a picture on lincolncentresource.com and that'll put you back on the right track!
I've been looking for that one, along with the 1983 DDR, since about July of 2013, ever since I got my Red Book (2014 version) along with every thing else in that book. I have found a 1998 Wide AM, but after I joined Coin Talk !! I was informed that the 1998 is the 2nd most common, but I still have one and it's in darn good condition. I'm happy. Rare, common, or otherwise.