I just bought some to be used as postage at the annoying Makati Central Post Office.
Honestly I think they are even better than the expensive papal stamps. They are cheap and they are printed quite big, the stamp is even bigger than the Bonifacio stamps.
Here are the other information about the Iglesia ni Cristo Centennial Stamps (1914-2014)
2014, May 10. Iglesia Ni Cristo (INC) Centennial
Litho Offset, Amstar Company, Inc., Perf 14
Singles (large size, 50mm x 35mm), Miniature Sheets of 10
10p Felix Y. Manalo, Founder, INC Temple in background - Singles (1,200,000)
Miniature Sheets of 10 (120,000)
Designer: Bienvenido A Santiago Jr.
Design Coordinator: Elenita D.L. San Diego
Adviser: Bienvenido A. Santiago
Layout Artist: Victorino Z. Serevo