Iridescent Papillon style art glass vase - is it Loetz?

This small, egg shaped vase was found on eBay AU recently. It was sold as possibly Loetz, but I'm not sure.
It is made from a thick layer of golden yellow glass, & measures 8 cm tall, 5.6 cm across the cut & polished top rim, & 3.5 cm across the base, which does not have a pontil mark. For a small vase it is quite heavy.
The is an intense iridescent finish with a textured Papillon type decor.
Last photo shows it with a known Loetz vase in the Mimosa decor, & a similar ground colour (Candia?).
I have not seen any Loetz vases in this particular shape...I'm wondering if the cut top is original or has been done later to remove damage. No signature, so possibly not a piece of modern studio art glass.
Any thoughts, folks?