Hello guys, I'm going to update this thread about round marker snowflake subs and add mine to your count.
It has the same serial number range as mine is 887XXX.
I found a beautiful example that needed little repair. I sent it to Mr Dominique Wieland for an overhaul. The only things that got replaced were the crystal, crown and tube. I left the case unpolished. I also have the original box, receipt and warranty document.
I am very happy with this and it's by far my favorite Snowflake sub I've owned. And so far it's +3 seconds/7 days since serviced.
Before service-
Movement, it's 25 rubies-
And after-