Long lost Ox & Bucks L.I. junior officers tunic

[T8HANTS]

Many years ago I had a junior officers tunic to the Ox & Bucks Light Infantry. 

The only distinguishing feature that I can remember was sewn onto the back of the neck just below the collar was some form of formation sign consisting of a pyramid, possibly with a squared off base, with another identical pyramid 'balancing' on the point of the first.

I have often wondered if this would have helped narrow down the owner's battalion, as I can't remember if there was a name inside.

So I'm just curios if anyone can shed any light on its history.

Sadly it was stolen along with a lot of my collection when a boy came through the roof space and helped himself.

The police weren't interested in recovering anything, even when I proved the junk dealer who had it, because they had the offender, case closed!