Number 1 bolt head. Seen enough rounds to set the bolt back. If factory new should have a 0 bolt head.
It a nice looking rifle. Clear markings so probably hasn’t been used much. Buy the gun not the story. Hope it shoots as well as it looks.
Not quite, I've seen pallets of new, unissued Lee Enfields and they didn't "all" have "0" bolt heads. It was much faster and cheaper to put in the appropriate bolt head for proper headspace, if the barrel torqued up at TDC, than it was to set it aside to be set back on a lathe.
As for the finish of the stock, it looks fine to me, the stampings are crisp and sharp and the texture is perfect.
Stampings do survive FTRs but they are quite obvious.
OP, that rifle is legitimate as being graded for VG or VG+ condition, verging on EXC condition.
It's a very nice example of post war No5 ROF. Early 1946 as well, by the serial number.
It's quite possible it was never issued but it's been carried/fondled enough to show a bit of rounding on the edges which would be sharp around the trigger guard. Also, the Suncorite has been worn off the back of the bolt from handling.
As mentioned, the bolt face shows signs of being fired.
All being said, whoever owned that rifle previously took very good care of it, especially the exterior. Make sure you look down the bore to see if there is any pitting, or if the edges of the rifling are still sharp and bright.
If it's going for a reasonable price, IMHO, it's a very nice piece and at the very least would be a lovely shooter I wouldn't be worried about devaluing if I wanted to shoot it.
It isn't "pristine" by any means.