Originally posted by Prince Harbinger Wish I knew of some camera convention shows in South Jersey. Tired of not getting what is advertised. I rather inspect the glass myself.
I've been to two conventions looking for vintage glass and all of the lenses I found were in pretty used condition, with all the front elements being scratched to a visible degree. The sellers were all asking for over what a mint copy on ebay goes for. Experiences differ for everyone, but I would still choose ebay over a convention. I usually look for lenses that are listed in mint or near mint condition.
These sellers that have descriptions like the one you posted usually have "excellent" as barely above fair condition. It usually goes something like
As Is
Good
Excellent
Excellent +
Excellent ++
Excellent +++
Near Mint
Mint
I would expect a lens to have all the defects you pictured when listed as "excellent", just saying. See if it affects image quality, I bet it doesn't. I have one early 60s lens that has heavy scratches all over the front element, loose components, rusted screws, dust everywhere, and it performs the same as my cleaner glass.