Hallmarks on hip flask? or other marks

British Silver Reading Silver Hallmarks
1

Hi,

I bought some items for my house from an auction and found this at the bottom of the box. Im sure its probably not silver but wondered if anyone could identify these marks?

Thanks
IMAG3821.jpg

2

It’s pewter. You may be able to identify the marks from the internet, but I think that the leftmost mark is that of the Association of British Pewter Craftsmen.