Cucharadedragon,
The Model 43 (M43) was the most issued kukri to Gurkha Regiments in 1943,44 and the first part of 1945. It was produced in British India and issued throughout the staging areas and depots there under orders via English Ordnance Command.
There are variations in the actual knife: some were made to hold a karda and chakmak while the majority didn't, the scabbards were usually dyed black but there are tan leather versions (for ops in Africa and the mideast ?), some had a single belt loop attachment while others had a two part lace-up frog and 2 attaching adjustable belts. Early versions had a seperate bolster and the next series had an integrated bolster, some are marked with the manufacturer and a 4 digit date (1944, etc), some had M43, some had the M on top of the date, many had no mark. The grips never had a raised ring, but would have 4 or 5 grooves cut into the grip. I have seen models with wood, aluminum, horn and ivory grips. The later had no grooves cut into the scales.
This model is well made, very solid and produced with excellent steel and engineering.