The lugs are drilled with fixed pins just like the original. It looks great with the Tropic 19 on it. I am using the Frei version of the crystal. It is marked 5517, but the serial is 295xxxx. Sorry don't have it memorized. That is too low for a real 5517. Oh, well.
Make sure you ask him if they are drilled. I tried two other times before him, and they gave me the "new and improved" version that was not drilled. Hopefully he can still get the drilled one.
Trevor had the watch to me in about 10 working days. He can also get the ETA dials if you want one with feet for ETA. I pressed on the crystal with my hand. It was snug. Then used my crystal press to press the crystal retaining ring on. I put an o-ring at the bottom of the ring. I reset the case tube with non-hardening thread compound. They do not leak swimming in the pool. I don't have a pressure tester, but I don't see how they could leak after I sealed them.
I just ordered a 5513 from Josh. It is supposed to use gen crystal and bezel too. It is 118.
I want to make a 5513.
And to think that my wife thinks I have too many watches. LOL
Hope this helps.