The 4130 is a great looking movement.. It can be displayed with an aftermarket transparent Case-back.
Let's review one in this part.
this case back is from Mr. Thomas Preik, German Master Watchmaker.
Here is what it looks like:
IMG_0234.JPG
Here is the candidate for the transplant... a modern 116520 SS Daytona..
IMG_0232copy.JPG
The clear case back has a clear viewing area that is 1.100"/28mm in diameter. That is similar to the Dial which is 1.200"/30.48mm in diameter.
The Sapphire thickness is .038"/.96mm - this compares exactly to the thickness of the Daytona case back which is also .038"/.96mm at the center.
IMG_0241.JPG
The machine work is excellent, threads are clean, and the inside diameter is nicely finished too.
I've polished up the glass, and set it aside until I get the old back off and things cleaned up and ready:
IMG_0243copy.JPG
Maybe next time, we'll actually put it on......
