After a bit of a hunt around, I found that a small gassworks in Denmark called Glasmageriet still produce these decanters. The proportions are fairly erratic (so my earlier assertion about linking form with date hould probably be amended), and there is no flanking frill.
The snout is fairly different to yours, though, and it doesn't have the optic ribbing that yours seems to have. But a fairly modern production might be back in the picture.
PS: You may also have some luck searching for 'snapsehund'.