Early Liubitel 2?

After investigating my collection I noticed this liubitel 2 has the earliest serial no that i have seen. Is this and early model?

http://www.ussrphoto.com/resize/resize_image.aspx?ImgWd=800&IptFl=/UserContent/28112015__PHT8089.jpg

http://www.ussrphoto.com/UserContent/28112015__PHT8089.jpg

http://www.fotoua.com/1cameraAlltip.php?st=7&rd=4&usl=4&usl1=lubi&seek1=&seek2=4 [:)]

According to the list, this câmera corresponds to Lubitel 1d or 1e made from 1955 to 1959 observe the 04XXXX number on lens
Lubitel câmeras are somewhat difficult to date once these were much mixed type parts in their construction
Regards
LP
More details in side filter cover and tripod screw.