Took place on Saturday. I missed out on the 287 by one bid. Hoping someone here got them? http://www.invaluable.com/catalog/18euppn1e8?size=200&page=1&categories=&searchWithAll=universal
I had my eye on lot 168 initially but then forgot about the auction (whoops). What was the final price?
That line on the back of each lug is very common on all UG steel pieces from that time period. It is actually something I look for on them.
Common on older watches, generally speaking. From MWR forum: "they're evidence of how the case & lugs were formed. The case & lugs were essentially forged or shaped around a form or mandrel."
I have never been able to truly ascertain what it is exactly. I have examined up close and it only appears to be a man made scratch in each lug which is why they tend to be a bit crooked and uneven. I do not believe they are any type of seam.