Art Nouveau iridescent pink & yellow striped art glass sugar castor

This is the third example of this type of glass that I've obtained. It arrived yesterday from the UK, so the mail does seem to be functioning well enough at this point in time.
As I recall, Michelle B also has an example of this attractive glass, but it's origins seem to remain obscure. I have also seen the same pink & yellow stripe decor without the iridescence, & in other forms - a lidded bowl & a squat vase, for example. I also have some glass buttons with a similar pink & yellow stripe.
This sugar castor measures 16 cm tall, inclusive of the silver plate top, & around 5 cm across the base, which does not have a pontil mark. It appears to be made from two layers of cased glass, the pink & yellow stripe inner layer overlaid with clear glass that has an iridescent satin finish. The silverplate top fitting is simply marked EPNS - electroplated nickel silver.
The fourth photo shows it with the other two pieces I have in the same decor - a biscuit barrel & a small lidded jar with a slot for a spoon, so perhaps intended for jam or other condiments. Interesting that they are all pieces with a "practical" use.
Two of them were purchased in Australia, & the latest from the UK. I feel that they are probably of a Bohemian/Czech origin.
Any useful information would be welcome. I like this decor a lot, & hope to find other pieces in the future.