Then, the other day, I picked up an old Gruen autowind from the antique mall for $25. The case was pretty much trashed. The front looked fine, but the back was all torn up with sharp edges and the lugs were all uneven (?). From the few minutes I got to hold it in the store, it seemed to be running ok, so I took a chance on it. Never really wore it though because the lugs were so uncomfortable. Well, the other day, I decided to try putting the Gruen movement in the rep case, and if actually fit really well! The crown fit on the old Gruen stem, too. Even the domed acrylic crystal from the old case snapped right in to the new case. I bet water resistance is nothing, but it fits tightly and doesn't spin. I added a homemade dial, and the darn thing has been running at around +/- 2 sec a day! Needless to say, I am pretty happy, considering this was just made on a whim.