So I did a bit of aging to my insert on the 5513. I used a dremel tool "fine-detail abrasive brush" then polished it a bit.
These are ultra high res pics taken with a Canon DSLR so it really shows everything. I took an iphone shot as well. Less harsh looking in person, and I'm happy with it, the black gloss of the insert is gone, it's a little barked up - and now looks the business of a 50+ year old watch.
Tell me what you think please!