That's not the 3 element version. I believe yours is the higher production f4 Elmar. I have that one too and really like it. But don't be deceived by its low price. If it's clean and without the common time-related problems that can diminish image quality - such as fog, haze, scratches and/or separation -- it is very capable of making wonderful images.
Many people gravitate towards faster lenses, but the designer's task of minimizing aberrations becomes much more difficult, I think exponentially so, as lens speed increases. So, whenever it's important to maximize image quality, I usually tend to favor their smaller, faster brethren, like the one you have and the 3 element version.
Plus it's soooo nice to be able to pack 4 or 5 tiny lenses in a small, light weight camera bag for trekking around the countryside.