Irish 6 Pence James I (not in the Numista catalogue)

Hello there, and have a productive and fund 2019!

Here's a coin I purchased recently, it was unidentified. I think it is a James I sixpence silver coin, but was not able to find it in the Ireland section of the Numista catalogue. Any confirmation or help in identifying it is appreciated. Also, since it is missing in the catalogue, maybe someone might be interested in adding it (I could do it myself, but I don't have a reference catalogue, unfortunately, so I can't check the actual records for it). Also, how would you rate it? I'd say it is in very good or fine condition.
~21mm, 1.8g.

I think my coin is this one, or at least similar:
http://www.yorkcoins.com/ir190_-_ireland,_james_i_(1603-1625),_sixpence,_1_91g_,_second_coinage_(1604-1607),_m_m__rose,%C2%A01st_bust.htm

Thanks!

Looks correct.
What is the symbol between REX and IACOBUS?
Propably a mintmark?

Nice coin!!!

Yes, I believe it's a rose mintmark.

If the state of the coin would be very good or fine, you would not have problems identifying it.
For me the coin is poor, not even good.

You may wish to read through this string, on a similar topic. One of the links is to an Irish online catalog that may be quite helpful to you.

https://en.numista.com/forum/topic77052.html

here is an old catalog:
https://www.dropbox.com/s/7v5rwvfx8tedzkj/Simon_s_Essay_on_Irish_Coins.pdf?dl=0

Thanks a lot, this is all very helpful. As for the condition, I know it is subjective, but since it is easily identifiable (I just couldn't find it in the Numista catalogue), I would still label it as VG.

Indeed, the legend is very good readable
I like the coin too