You won't be disappointed. The curvature at 43mm has to be seen to be believed!
I had two of these, equally bad, in the 1980s. Yes, two. Both were given to me. I didn't understand why, until I went out and actually shot images with them. Then all was revealed.
Oddly, the most deightful results I had from them was with the long-discontinued Kodak Ektachrome Infrared film, which gave truly weird colors and edge fringing such as you can't get even today with the cheapest digital cameras.
I shot some film with a Cokin prism with splendidly strange results. Very unpredictable. Distorted, even astral effects which can't be explained but have to be seen. If one were to want to truly abandon all hope in photography, this is the lens to use.
Equally oddly, black-and-white films produced the best (= sharpest) results across the lens spectrum of settings. Color negative images were hopeless, but then color neg films in the '80s weren't crash-hot anyway. Remember Kodak Vericolor. The best images were from the then-available Kodak Ektar 25 with a Nikkormat, Nothing I took on the Ektar could be blown up to more than minilab print size but how many 16x20 enlargements does one need anyway?
Go forth, shoot away, and enjoy. And please post some of your favorite (I meant to say "best" but the term doesn't really apply to the 43-86) results for us to enjoy. Ciao!
PS1 +1 to Eric Rose (#6). Overloads of a certain equine byproduct also came to my mind...