It does look like a Holmegaard. They were made in a variety of sizes. I have one (with a Homegaard label) even smaller than this. They come with a ball or a crown shaped stopper. If I remember correctly, the only problem is that it's a very old design that a number of companies have made. The Holmegaard is well made, but I can't remember the other distinguishing features. Nic (Pinkspoons) would be able to tell you.
David