I am eternely grateful for the outstanding information you have provided.
Now i can sleep in peace
... and even have nice dreams, once the age of this piece is even earlier that i was told in the first place.
I don't have the presumption to be acquainted with early fire (or white) arms more than in a residual level, but i can assimilate all that you have said, as also what is written in the French article.
I was aware that in Aljubarrota battle, firearms were (already or firstly) used, although with an impact more psichologic than efective, i would guess. In fact and as it is divulged, crossbows were massively used there and plaid a major role. This was the greatest example for those who consider that crossbows were the weapon "responsible" for the maintainance of Portugal as an independent nation, during a significant period.
I have read your threads on harquebuses as you posted them. They made me go and review some pages i knew i had on these weapons, namely a book offered by a Portuguese bank, in a limited edition. There are a couple interesting pictures of matchlocks there that i could post here, but then i thaught twice and considered you must already know them, and many, many more.
Once again thank you so much for the material you have posted here. I was so pleased to see pictures of your example; it does look like the "next of keen" to mine.
I would not be surprised that my piece was also dug in São Jorge (where actually the battle took place, couple miles from Aljubarrota), as i am aware that the seller has acquired it 60 miles away from such place.
Clicking in the English version, there is a box titled "the battle in one minute"
... nothing much, just for the fun.