Perfectly normal and understand that these are service parts and not necessarily a good idea to try and replace with an “original” which was once discarded in a service. I’ve learned the hard way with ann expensive annd cross threaded Omega crown and I thanked goodness they are still in business and my watchmaker was able to replace the crown and stem with new parts. Let sleeping dogs lie. A service crown is not an issue IMO.
Thank you for your feedback. Tbh, it still bothers me, but I perfectly understand. Anyway it would be a replacement, really 😉