If you take a close look at the picture, the inside lid of the case has a label. The bottom of the label tells us that the pipes are made by "Hakam Din, Sialkot, Pakistan with Grainger competition chanter".

That for me would be a starting point to try to find images of other pipes from the same maker for comparison, looking at the beading/combing and projecting mount profiles.

Now, the make of the pipes may have changed since the label was made since some people buy/sell/trade multiple sets over the course of their piping career. Others, like myself, do not.