I have posted this item before,but still are none the wiser,so i thought i might have another go.
The item has the Royal Regiment of Artillery insignia painted on it,it is hollow and made of porcelain or pottery ?
Its about 100mm in length and circular and the ends look like they plug ? into something else.
I think it pre dates WW2 as i found it in a 19th century tip.
Some ideas i have, is that it is either a Beer tap handle or maybe a Toilet chain handle,both of which seem totally implausable
Glad to hear any new ideas or guesses