I have a new and unused MM1 adjustable mount, complete with mounting foot and a removable plate for transmissive optics. Also included in an unused 10mm x 15mm 50/50 beam splitter.
This is exceptionally well made in anodised aluminium, with a stainless steel post.
I would like £40 plus postage. Happy to ship anywhere.
Apologies for the blury photos. EDIT: £35 plus postage.