New resin model by L&M Scale Kits- ref. 72-137 - SOKO Novi Avion aka Yu Supersonic
Sources:
https://www.ebay.de/itm/334360558749
https://www.facebook.com/groups/10150127499515167/posts/10165995085355167/
More about the SOKO Novi Avion project: https://en.wikipedia.org/wiki/Novi_Avion
V.P.