I found this late last night. This is only the second '88-P I've found. Still no '88-Ds. This one matches WTRD-001 Stage B (Wexler), and RDV-006.3 Stage B (CONECA). The image of UNITED shows the marker for Stage B. CONECA - http://varietyvista.com/1988PRDV0063 cent.htm Wexler - http://doubleddie.com/278722.html