I think it's a Remington M11, not an FN A5
No cut-off
Safety is cross bolt at the rear of the guard.
Remington started using that style on their M11 in the '28 on the 12ga.
1930 and '31 I think on the 16ga and then the 20ga when they came out.
Previous to that the Remington autos had the same Inside the front of the Guard sliding safety as the FN A5
FN didn't change over to the cross bolt till after WW2 I don't think.
..and C/L died in the plane crash in '42.
..FWIW, when I worked for a large Restoration shop some yrs back, we were sent a Parker DE grade Skeet gun for total restoration,,wood and metal.
20ga I think it was,,might have been a 28.
The gun had belonged to Clark Gable and was a gift to Carole Lombard. Well documented. The shotgun was in what most would consider around 90% orig condition overall.
But at the time, early 90's,,it wasn't at all unusual to get shotguns (mostly) to 'restore' to 100% condition. Several dealers sent them in for the face lift.
As with any collectible firearm, the big $$ is in that last 10% climb in condition.
The gun was totally redone. Metal annealed, engraving recut, recase colored or blued as needed. Wood refinished,,,'restored',,, bbls polished and rust blued. The whole gig.
During the process, the trigger guard, was lost.
Actually it was thrown out to be honest. The overly ambitious hurry up get it done purveyor threw it out with the spent matr'l from the charcoal blue procedure. That was mixed with the large amt of spent mtr'l from the days casehardening.
Never found it.
So a new trigger guard made from a spare VH Parker guard on hand was fitted. Engraved to the D pattern and then hand cut numbered on the tang as the originals are to match the gun. Then stamped ser#'d on the back as the orig's are.
I doubt the pattern is exactly what was on Carole's, they are all a bit different.
But hey, it looks good.
Bet that gun is the pride of a collection and just look at that condition. Just about new! and after all these years.