Dubrovnik Bases and Minute Differences

It's very possible my eyes are playing tricks on me because the bases on @paulo_armi Minceta from the other thread all appear quite similar and in-harmony. Perhaps it's just a bad picture angle on the above pictures...

Beware photographic distortion. I also see what you describe. If you look long enough you'll probably notice other subtleties as well (no hints!).

Here are a few additional thoughts on the Noj set, @felonet
The bases on the Minceta do show the differences you mentioned. From my photos below, you can see that the king, queen, bishop and pawn all share the same style of curvature in the bases, whereas the knight and rook have that distinctive bubble-like base. These are quite different from the 1950 Dubrovnik set (which was designed by a sculptor), but actually pretty similar to the Dubrovnik II (which was redesigned by a cartoonist).
Personally, what bothers me more are other design differences between the Dubrovnik II and the Minceta. For example, in the Dubrovnik II the thinner/slimmer bodies of the pieces, which contrast with the larger heads and bases, and the distorted head of the bishop, make the set feel less harmonious to me. Just my opinion, of course.
That said, there’s something priceless about invading the seventh rank with the chunky Minceta rooks, slicing through the board with those wasp-like bishops, or placing a knight deep in enemy territory with its bold, weighty base. The Minceta gives you that kind of satisfaction.
But at the end of the day, it’s all about preference—and how much joy you get not just from playing with the pieces, but also from storing them, looking at them, and chatting about them with mates and fellow chess lovers.
Anyway, as others have pointed out in different threads in this forum, you can’t go wrong with a Noj set, no matter which one you choose. Worst case, there’s always a strong second-hand market for Noj pieces given the long wait list—though I honestly think it’s near impossible not to love them
When I examine the Dubrovnik reproductions from NOJ, it seems:
This is extremely subtle and perhaps my eyes are playing tricks on me. Is there a reason for this? Shouldn't the Minceta bases all be "bubble" like the Dubrovnik II? I know the Minceta was aimed at replicating Fischer's set and I'm curious if these differences are related to that? Something else?