Thanks Don, Rubenandres77 and Yoav.
Regarding your's question Don, my research was more for details of this aircraft and not regarding this special model serial number. Actually I didn't fined a profile of this specific model, but found another profile from a plastic model release that is called "Little Sir Echo"
I think that Rubenandres77 is right. This Flymodel model was released more than 10 years ago, and the emphasis on the accuracy of this details was less advance than is today.
Hope to present this and other models at the December annual meeting, but I need to finish it first.
Shalom Mor