Kenner employed the "Fan Club Offer" advertisement on both 1st and 2nd series blister cards. 2nd Series Fan Club Offer banners, like the one found on this Desaad proof card front, denote a 1986 offer expiration, while banners on 1st series cards contain a 1985 offer expiration date.
The third photo, shown above, provides a close-up view depicting the complete artwork normally obscured by the figure and mini-comic on carded figures.
The final image shows hand-written initials and review dates.
An alternate version of the 2nd Series 23-Back (Fan Club Offer) proof card for Desaad exists featuring flesh tone coloring in the hands and face as opposed to the different coloration found on both the proof card in this entry and all production quality Desaad packaging. Desaad has also been documented in proof card form on a single 3rd Series 33-Back (Offerless) proof card as seen here.