Ok, Cugir manufactured the M44 Mosin from '53 to '55, used the same style serial method, but also had prefixes CP, DX, EF, RF, FS, GR, TV are some I've seen.
The estimated production numbers:
1953- 2,000 – 3,000
1954- 36,000
1955- 31,000
That is 70,000 rifles in 3 years.