Albus' secret network of forgers?
(or: how might function the creation of (magical) artefacts, according to the (quite confusing) film FBtSoD)
[ disclaimer: greetings, those who followed that account when I still posted essays & theories here. I am not quite back - I will post the thing about Dumbledore's boggart soon, though, despite the fact that it is... not exactly finished and satisfying. some things still could be interesting - that is why I will post it anyway. and by the way, if you are interested in the show WWDITS, you might be interested by this account: @uthseikoashx-itsnighttime. and, oh, sorry for the mistakes! 2 years later, i am still not fluent... :) ]
The fact that Bunty (Newt's assistant) must ask an actual craftperson to replicate the case suggests that a simple spell does not work. Two possible explanations may be :
the wizards can detect or feel when a product is a spell-crafted replica (...it is quite canon already)
every magical artefact has to be built by a craftperson gifted in magic and be enchanted by them (... once again, logical)
It justifies why Dundy does no use a simple spell. Furthermore, it implies that a lot of objects in the wizarding world are suffused with magic.
Nonetheless, Albus gives Newt and other characters, several times, items helping them in their respective quests: invitation cards, authorisation papers (when Newt saves Theseus (in a maze, quite ironic considering the myth)), etc. Official items, probably crafted magically to avoid... replicas, precisely. But those papers are most likely forged - how can Jacob attend to the tea party, if they are not? (or it would indicate a terrifying lack of security mesures - an absurd lack, so a logical explanation is preferable in my opinion).
Thus, I think we can infer two things:
there are wizards doing counterfeit papers, authorisations... and there are most definitely organisations in charge of forging fake documents or objects (a mafia of sorts?).
Dumbledore is in touch with one of those wizards/witches, or with one of these organisations - we can even suppose that in dark times, Dumbledore himself gathers a team of wizards/witches skilled in that kind of illegal activities (I headcanon that the Order of the Phoenix counted far more people than the main team for that very reason, even if those people were not as important as the Square Grimmault's team)
Sure, one might affirm that Albus is capable of forging those papers by himself - I don't think he would spend time on that, though. I guess that the credibility of the second point depends on how each fan sees Albus.
But it suggests two other things:
knowing that people forge false documents, instances (such as ministries) must stay alert and develop advanced methods of detection.
but in FBTSOD, Newt, Jacob... can walk in and out official buildings & meetings very easily: so, either their documents are particulary well counterfeited, either Grindelwald (or his minions) ordered the security staff to let Newt's team infiltrate the tea party and other official meetings (when Vogel announces that Grindelwald is now free of charges, for example)
So, Albus' probable secret network of forgers might not be that secret - but still quite useful, albeit not fooling Grindelwald's team - I mean, the bad guys know how the good guys look like, and Newt is quite well known - so in that situation, fake authorisations are almost... accessories (except in Newt's case, when he saves Theseus)...
Oh, besides, I interpret the fact that Grindelwald allows (supposedly) Newt's team to act as something not entirely done for the sake of his nomination as the new great leader; I tend to think that he is somehow curious of what Dumbledore is doing. But I will definitely come back to that in another post.
It's been a while since I have written - or read - any meta in the fandom; I hope this theory is still relevant, guys. And understandable.
Thank you for reading :)