Oddly enough, I had a mummified DCM 1903a3 w/ the 1960's railway express box that I couldn't sell for three/four years. Everyone wanted to have one to shoot; no one wanted an "as shipped" rifle for the "collection". Finally swapped it off for I can't remember what- possibly towards the "new" L42a1...
Those unwrapped No.4 Mk.2s were purchased fairly reasonably as they were no longer wrapped- The "mummy" was purchased when they first came in country and they "littered the countryside".