Help attributing countermarked maravedi

Hi!

I have quite interesting countermarked coin. 
As I could see it is 1 maravedi N#132252 (not sure about the date and type).

Countermarked year is hardly readable. The countermarked value seems to be VI. 
Does anybody know details on that? 
When this coins might have been countermarked? 
What value it was countermarked to?

I have found a couple of similar items n ebay:
- https://www.ebay.de/itm/376572168139

- https://www.ebay.com/itm/205757683105

Thanks in advance!

All this info is in Spanish, but you can easily translate it:

https://mayor25.com/noticias/maravedis-castellanos-resellados/#:~:text=*%20Inicio.%20*%20Men%C3%BA

Then you can download (legally and for free) the main catalogue for Spanish coins:

https://www.aureo.com/es/comprarcatalogo

And now have a look at p. 162 (p 163, in PDF), coins 513 & 515. Yours should be one of these 2: 

N#117839

N#139361

@Higuera thanks for the comprehensive info!

First, I realized that the base coin is 2 maravedis N#48766, not 1 maravedi as I mistakenely thought before.

Then, according to the article, I have two options to choose from:
1. countermarked in 1603 from 2 maravedis to 4 maravedis and then countermarked further in 1636 to 6 maravedis.
In this case, coin should contain countertamp from 1603 
- ‘IIII with mintmark’
and two counterstamps from 1636 
– ‘VI with mintmark' 
– ‘1636 with crown’.
2. countermarked in 1641
In this case, I should see two counterstamps from 1641 year only: 
- ‘VI with mintmark' 
- ‘1641 with crown’.

Theoretically, it could be the third option if the coin was countermarked in 1603 from 2 maravedis to 4 maravedis and then countermarked in 1641 to 6 maravedis, with the following markes then:
- ‘IIII with mintmark’
- ‘VI with mintmark' 
- ‘1641 with crown’.
 

 The problem is that I can see counterstamped years on both sides of the coins and both are incomplete or barely readable.
And I don't clearly  see `IIII with mintmark`. 

I lean to the first option N#117839 , but not sure.

Sincerely,

Alexey