FWIW, I have been sourcing bezel inserts for 2 (latest version) of the BK/(TC) 16610 which are in build right now. First thing I learned is that the "40" on the dial is not much help unless it is sloppy. Next thing is that there are at least 3, and maybe 4, different "40"s for the 14060 and the 16610 cases..
One is "thin" and goes to a point (inside the 4) with a tiny bit of flatenning at the top of the 4.
ex: http://tinyurl.com/lwak56q
One is semi"fat" and flatens off slightly in, and at the top of the 4
Then there is a "fat" one which really flattens off at the top of the 4 (Like your example). in a 16610, it can flatten big at the top, but still be "thin"
ex http://tinyurl.com/p5obyyl
As pointed out, for the case build accessories ie Crystal, bezel/insert kit, bracelet.... you need 16610 components or ones that fall under the 16800 (not 1680) broader classification group. The hands' spec is driven by the movement, Calbre or ETA, or Asian etc
That "40" was making me crazy while I was looking. IMHO, the pearl in the insert is a clue for gen, but I think vetting the reliability/reputation of the seller is prolly the best thing we can do.
Again from my search and IMHO2, the14060 parts are slighly less costly than the 16610 parts, with the 5XXX series of cases more costly of the 3 cases-build.