The shield and one of the proofs look to be double-struck - perhaps the LITHGOW stamp is also? Maybe an apprentice was doing the stamping that day. A very nice 1916 scabbard with clear markings also.
It does. But looking closely, you can see what looks like the remnants of an upright "LITH" underneath/behind the "LITH". Also, there are different fonts in the 1 of the 1915 suggesting a restrike.The LITHGOW stamp looks more like LITHGOW....