Re the hole in the 180 vice casting.
I bought my 180 in the late 1970s or early eighties and the price of £12.00 seems to stick in my mind, certainly it seemed a a lot at the time.
The copy of the original vice advert posted by Nick shows that Eclipse thought the vice might be useful for anglers who were fly tyers (sp?). The vendor who sold me the vice ( Blackshaws in Macclesfield ) told me the hole was for use by fly tyers to attach user-made brackets for holding such things as miniature reels of silk, and I note that such attachments are often available for use with specialist fly tying vices.
Rod