Peter, a question on No. 4 Cutaways
I recently had the opportunity to handle two cutaways. A No.4 Mk1 with SKNXXXX serial number with the original number removed. The other one was a No.4 Mk1/2 without the SKN number--just the original number on the socket.
You have previously stated that armorer students made cutaways to demonstrate their capabilities.
Are cutaways without SKN numbers examples done by students?
Are cutaways with SKN numbers batch made under government contract by ordnance plants?