depends on how many sheets u put inside..
At least 94 cents (two Forever stamps), and possibly more depending on weight.
Over 9000.
A 6x8 inch padded envelope will require approximately $3.00 for up to 13 ounces. The USPS website offers the tools for all calculations based on weight and envelope dimensions
This would move you letter into the "Flat Class" and can be mailed via 1st class as long as it weighs under 15oz. Your price would be about $.90.
The price of a First Class Stamp in 1976 was 13 cents. It was good for one ounce of First Class Postage. It went up from 10 cents in 1975.
The answer will depend on which country you are posting in and where the destination is. Also, in some countries, the nature of the contents will affect the postage (eg printed matter).
13 cents. See the website below.
The number of stamps needed for an envelope depends on the weight and destination. The weight limit for a standard USPS First-Class Mail envelope is 3.5 ounces. For an envelope weighing 12 lbs, you would need to use a different shipping method, such as USPS Priority Mail or USPS Priority Mail Express. The specific number of stamps required can be calculated using the USPS postage rate calculator or by visiting your local post office.
The US domestic rate for an ordinary 1st-class letter was 10 cents in 1975 until the last day, Dec 31, when it jumped to 13 cents.
There was never a 12 cent stamp for regular postage. It went from 10 cents to 13 cents on 12/31/1975. There was however a postage card stamp for 12 cents in 1981.
{| |- | First Class postage in 1975 was 10 cents for the first ounce. This rate was valid through December 31st of that year. At that point it went up to 13 cents. |}