Sorted myself a lovely pair of plastic 'uns, all black and shiny and err... plastic. Two identical injection moulded beauties with ummm... fabulous external knurling and internal right handed thread. Immaculate condition and errr... stuff.
Off to lie down

love the prizzie its my fave model!
heres my may 81 model
not as mint as urs but a work in progress

Looks like a good starting point for a project mikeyboyo. Hope all goes well with it, remember to post pics as you go!