8mm Glatt Flobert rifle

[paulus 26]

Question ladies and gentlemen, is this an obsolete calibre? my understanding is no but there's a few examples of UK auction houses selling them as an obsolete calibre. 

Example,

Lot 1016: An early 20th Century 6mm Glatt bolt action smooth bore rifle by Victor, no visible numbers, with 18.5ins blued steel barrel, hardwood stock, 36ins overall Note: Obsolete calibre weapon

Est: £80 GBP - £120 GBPSold: Log in to view

Canterbury Auction GalleriesApril 05, 2017Canterbury, United Kingdom

[hambone 948]

I thought Flobert was 9mm,  small metal shot cartridges my uncle used to have one. Still get them i think.

[Deker 3,453]

Is this a Flobart?????

Lot 1016: An early 20th Century 6mm Glatt bolt action smooth bore rifle by Victor, no visible numbers, with 18.5ins blued steel barrel, hardwood stock, 36ins overall Note: Obsolete calibre weapon

I'm probably getting old and forgetful but I seem to recall they were available in 9mm and 6mm (.22)!