NZ .22 Pattern 1914 No. 2 HELP!!

[StratA]

The marking disc is the usual brass with brass screw but not marked on the side that is showing. I can remove it and check the flip side. The picture of the opposite side of the barrel was too large to attach but there's only the serial number of 5400 inline with the serial re-numbering of 5400 on the receiver.
The last time I removed all of the wood was probably 20 years ago. I can tear it down if you think there might be something of value to you but it'll take me a few days to get to it. The stock is in good condition but, obviously, a century old.
If it is of use I'm happy to take better photos as well.

Edit: the nose cap is serialed to the rifle (5400) as is the ladder sight.