Singapore has two
NVIs today: 1st Local and 2nd Local.
The first
Singapore NVIs were issued in 1995; almost every
issue had a "For Local Addresses Only" stamp. Later,
in 2004, a new NVI
denomination was released: "2nd Local". Since then almost all
issues have "1st Local" stamps, and some have "2nd Local" stamps,
rather than the previous "For Local Addresses Only". 1st Local
stamps are valid for standard letters within Singapore up to 20g,
and 2nd Local stamps are valid for standard letters within
Singapore up to 40g.
Thanks for the info.