1943 Longbranch Marking interpretation

[Accumulator]

Have a matching 1943 No4 mk1* 2 land . I’ve seen most of these markings on previous rifles I have had but there seems to be some extra number / letters , perhaps regiment and rack ? Would appreciate any input . I have circled the areas im not acquainted with .
Thx
Cheers
Ghh

 

[Lee Enfield]

LB_66 was a Long Branch Factory inspectors marking (as opposed to a C^ Military/Government Inspector).

The "F" and "S" markings have been lost to time.

 

[Accumulator]

Thx . Kinda figured it was a difficult task to decipher the extra stamps

 

[Timberlord]

The " S " might be for " short length "

 

[woodchopper]

The " S " might be for " short length "

well that looks like the markings on the forestock and all the short markings I've seen are on the buttstock

 

[QM 8687]

F is the remains of EFD. Rest can be seen in pic. Enfield. S perhaps Savage. That wood has been around.