Mozambique King Luiz 1877 Perforation Oddities?

While working on Mozambique, condensing the contents of several collections and accumulations, I found some "interesting" perforation anomalies concerning the King Luiz issues of 1886.

All the references I have access to states these can be found either perf 12 1/2 OR 13 1/2, so those are the 2 piles I started.

I then came across these 3 stamps that have odd perforations. The first is perf 12 1/2 on the left, top and right, but perf 14 on the bottom.
The second is perf 12 1/2 on the top right and bottom, but perf 14 on the left.
The third is perf 12 1/2 on the bottom left and top but perf 14 on the right....??

My first thought is someone was having fun with a perforation wheel. But why? None are high CV stamps.

I have seen other issues from some countries where there are perforation differences like this, but they are noted in catalogs.

Is there something I'm missing? Or are they actually just reperforated?

BTW, these came from 2 totally different collections, which seemed weird by itself.

Is the odd perf actually 14 or 13 1/2, 13 3/4, or something near those? These were produced in Portugal and shipped to the various cities in Mozambique and where produced they only had the two types of perforators. I could see issues where something was perfed 12 1/2 but one line was left off, then they cleaned up the missing perforations by running it through the other machine. That would give you a stamp that was 12 1/2 on three sides and 13 1/2 on the fourth. If it's a true 14 and not a 'nearly 14' then it almost has to be someone making a poorly centered stamp look better... It's also worth noting that in the 1870-76 Luis I issues of Portugal they did produce some perf 14 issues, though they are fairly rare. Perhaps that perforator was still sitting around twenty years later?

Given that the 3 stamps all appear to be line perfed, perhaps a perf 14 wheel needed to be substituted for a damaged one of the noted and accepted perf configurations?

The image in Scott's for type A1 appears to be comb perfed. Are all your other copies comb perf, all line, or a mixture? Scott does not mention what type of perforation was used.