thanks again for your persevering which is much appreciated.
The link you gave has now disappeared (I had a quick look last night). I think that vase might have been made by Harrach.
I can't explain totally why, but I wasn't convinced by the enamelling being the same to be honest. I've seen a few that I thought might have come from the same stable as that enamelling with those lovely pale odd greeny leaves etc, but none are quite the same (to my eye anyway, I could be completely wrong of course)for some reason. The detail isn't quite as detailed, the type of enamel/enamel effect used on my insects doesn't 'appear' to be quite the same. That said, those photos weren't that brilliant so not being able to see very close up perhaps makes it difficult for me to judge.
I've no time at the moment to devote to some good old searches, but I will try and find that piece again and see if I can find others to compare. Thanks again!