Up until recently Somec had all their catalogs on their website. Luckily you can still access them via the Wayback Machine:
https://web.archive.org/web/20200225...tage_catalogs/
However, the scans are fairly lo res and there's not much in the way of details.
Yours is interesting as the colour scheme fits with the 1992 catalog, but the non-fastback seat stay/seat tube junction suggests it might be a bit earlier. It doesn't appear that there is any 'cartouche' on the seat stay caps, which is odd, as Somec wouldn't have missed a chance to stamp their name on something!
Apparently Somec are quite good at responding to frame ID queries, so maybe shoot Lara an e-mail with some pictures and serial number:
https://somec.com/en/contacts/
Edit: looks to me like the Mod Cromor GL on page 5 of this catalog:
https://web.archive.org/web/20200205...e/04_somec.pdf
Not sure what year that catalog is, but probably 1994?