Slightly tricky for a couple of reasons.
1 - We don't have a classified section. and
2 - We don't have a classified section.
Allowing club members to know it is for sale so interested parties can contact the current owner to enquire about price and condition seems totally reasonable to me.
I don't plan on selling my Black Shadow for many, many years, nor do I plan on buying a second Vincent. So, whether or not advertising the sale of machines is prohibited on the Forum would have no effect on me. However, the same place where the Forum rules state advertisements are not allowed, also says the reason the Forum exists is:
The objects of the Forum shall be to facilitate open conversation concerning:
(a) The furtherance of social and sporting activities in the interests of motorcycling in general and the H.R.D. and Vincent marques in particular;
(b) The perpetuation of the H.R.D., Vincent H.R.D. and Vincent marques by encouraging and supporting the continued use of such vehicles;
(c) The perpetuation of the Vincent H.R.D. Owners Club, and matters related to the activities and organisation of the Club.
It seems to me that transferring complete Vincents from one person to another almost certainly would further the club in every way stated above. While it could get annoying if posts started appearing advertising individual parts, complete machines are in different category. So, as a friendly suggestion, where the rule that has just been violated now says...:
(e) The VOC Forum prohibits advertising, spam and/or solicitation within the body of individual forum posts.
... whoever is in charge of such things might consider modifying this a tiny bit by adding a clause saying something like,
except for the sale of complete machines.