By "offering", do you mean that you are listing it in the classic power tools category as a new item for discussion, or are you trying to sell it? If the latter, it should be in the Buying, Selling, and Trading section. If the former, we'd love to see photos of it.
BTW: it would be much easier to read your post if there were spaces between words and between sentences. It might look something like this:
I am offering my very hard to find B&D 6", wormgear, sidewinder, circular saw, WU-60, 2H, 71606. All metal, it is 115 volt, ac / dc, 10 amp, 5500 rpm, series 1. This powerful compact saw is heavy and vibration free. I believe this saw was built in the early 50's. I have never seen any pics or info on it ever. Information on a series 1, WU-60, model 71606 would be appreciated. Thanks!