SINGAPORE 1962 National Day stamps 1st Day Issue on Esso Standard Eastern letter

Description

Here's an interesting First Day of Issue Singapore franked registered envelope dated 3 Jun 1962 which was the 3rd Anniversary of Autonomy (National Day) of Singapore. The cover includes a block of four 4 cents and two 10 cents 1962 National Day stamps which are in very good condition. The Esso Standard Eastern Inc., envelope is a piece of Esso (now Exxon) history from Singapore which is hard to find these days. The envelope has been folded in two places (bottom and mid third) as can be seen in the scans.
Please refer to the scans as to condition of the item. This is the item you will receive.
Will combine shipping costs for multiple stamp purchases.
IMPORTANT: If you buy more than one item please request an invoice prior to making your payment to ensure you pay only one postage charge.