A Dragon Badge but which Regiment?

[Hawthorn]

Firstly apologies for the quality of the images but the postcard in question is not the clearest. Having recently been looking at Brookies excellent Welsh themed albums showing various photographs and postcards I thought I would try and get an exact identification for a card I have where the cap badge appears to be a Dragon of some description.

No Studio marks to indicate a location I'm afraid.

Any identifications greatly appreciated.

Regards Simon.