If You have a Black Lightning to sell, we don't recomend that You restrict Yourself just to insert an ad in the local newspaper or put it on e-bay....
When Sivert sold his Black Lightning he had a professional brochure made, that he could send to prospective buyers.
Few buyers consider buying anything in this price level without first gathering all possible information and documents about the bike.

Here is the brochure of Sivert's Black Lightning.