Wow definitely not what I expected to see when I read Monark Silver King. They started using that name in the 1930s. They were fantastic bikes
The aluminum ones with ally cast lugs were sublime!
I've never seen one like yours though.
It's a BSO.
Mig welded gaspipe, everything cheap as can be.
Silver King i thought referred to the polished alloy, so either it's stickered up, or the brand was "revived" by a toy catalogue