Published locally in 1981 (or was it in 1982?), the NU stamp album became popular among collectors of Republic issues.
It was a looseleaf album hole-punched for a three-ring binder. The cover was illustrated in color but the inside pages, containing outlined spaces for each stamp and souvenir sheet, were printed in black.
There were additional pages printed later to accommodate subsequent issues (up to 1984?) but, if I recall correctly, these were in different paper stock than the original.
And, if I remember rightly, the NU stands for Nenita Urdaneta (the publisher?).
Like other collectors of Republic stamps in Davao City at the time I, too, owned one, but later sold it.