Singapore 1967 1st Orchids Series $50 dollar banknote

Take note that all the estimated value in the book is in ringgit.

Technical Specification:

Size: 146mm x 87 mm

Prefix: A/1~?

Replacement Prefix: Z/1

Printer: T.D.L.R

This 50 dollar banknote got 4 types:

1) sign by Mr. Lim Kim San

2) sign by Dr. Goh Keng Swee with a red seal on it

3) Sign by Mr. Hon Sui Sen

4) Sign by Mr. Hon Sui Sen with a red seal on it