Hello Richard,
Your scabbard is quite intriguing, as it has the ridge on the front, associated with military scabbards for stopping the frogs from slipping up!
Its certainley a a village kukri, with a typical shape found all over Nepal, I have posted some picks below of a villager scabbard from Bhojpure district, it would be a case of adapting it to suit your kukri;
Cheers Simon