designed by William Plunkett, probably in 60's/70's no longer in production. I found these in a second hand office furniture store years ago and had them re upholstered in leather. but you might find a specialist 20th century furniture dealer who could help. they are similar to the eames lounge chair - but a lot harder find and not copied

Amazing find, really lovely with the leather. Let me know if you find any extras, especially if they're a little beat up! ;)