Two boards – The W5-DP board is assembly 904-5940P, Schematic 081-7067K. the W5-AP board has 421-2991H stamped on it. Both boards were manufactured on October 30, 2002. These were purchased new by an Allen organ service center that is now out of business. Never used, kept in a service kit. Sold as-is. Cost includes shipping in the continental US only.