Grindaur
Verified Curmudgeon
Recently I bought "Seiko" screw down crowns from AliExpress. Price was great but two things were an issue:
1. I thought I was ordering cross hatched but got straight
2. Did not closely look to see that the crown tubes were Rolex style screw in rather than press in.
All that stated with some work from yours truly they have been fitted to a Seiko Pippin case and a Ecozilla. I had seen these in my search but being cheap (and wanting more than 1, I did not buy these. Take a look. Have a Seiko with a damaged crown tube? This might be the answer. To install them correctly you will need some machinist skills (or watch makers) a mill and a lathe are also a plus. The first installation over 10 years ago I did was only using my drill press but the Citizen Navitimer came through fine, that was a press in as this is, the screw in tube is a little more demanding.
1. I thought I was ordering cross hatched but got straight
2. Did not closely look to see that the crown tubes were Rolex style screw in rather than press in.
All that stated with some work from yours truly they have been fitted to a Seiko Pippin case and a Ecozilla. I had seen these in my search but being cheap (and wanting more than 1, I did not buy these. Take a look. Have a Seiko with a damaged crown tube? This might be the answer. To install them correctly you will need some machinist skills (or watch makers) a mill and a lathe are also a plus. The first installation over 10 years ago I did was only using my drill press but the Citizen Navitimer came through fine, that was a press in as this is, the screw in tube is a little more demanding.
