Help me to identify regulator

[АлександрД]

found on https://www.avito.ru/murmansk/sport_i_otdyh/reduktor_akvalanga_2556420172
Who knows - what is it?
Thank you in advance!

 

[Kupu]

Nemrod, the second stage had Ibiza label which is worn off.
Not sure exact ID of first stage, although it is Nemrod brand.

 

[Kupu]

Delta 2 first stage looks like a match. If you click the link, scroll right thru the picture to see DIN version.

 

[axxel57]

Seems that the identification of the Nemrod regulator models is organized by the name of the 2nd stages (at least for the US Nemrod models).
So the 1sts seem not to have model names.