They don't track by serial number, they track by date completed & customer name. Larry explained this to me several years ago. Gets confusing if a customer has had multiple guns pass though there.

I have a 1915 16ga VH that I bought at auction, the shipping box was postmarked June of 1985 from their location. The person it was sent to turned out to be a semi regular customer. FWIW Larry identified the gun as theirs via the case color. I believe they now send them to Turnbull for CC work.