2.7 lbs
One ounce
This depends only on the weight of the letter. If it is under 13oz you can send it anywhere in the country with 1 first class stamp.
It depends where you are sending it from as well as the size and weight of the letter.
To send a 1.8 oz letter to Canada, you would typically need one international first-class stamp, which covers up to 1 ounce, plus an additional ounce stamp for the extra weight. As of my last update, this means you would need a total of two international stamps. Always check the latest postal rates on the USPS website, as rates may change.
It depends on the weight of the letter, If it is 1 Oz. postage is 98 cents
To send a standard envelope to Switzerland from the United States, you typically need $1.40 in postage for a first-class international letter weighing up to 1 ounce. If your envelope exceeds this weight, additional postage will be required. It's advisable to check with the USPS for the most current rates and any potential changes in pricing.
First class postage is 45 centsFirst class postage is 45 cents
For a postcard that is 6 inches long by 4 and 1/4 inches high, first class postage in the US is 27 cents as of June 2008.
That is what they are used for, to send a letter to another place in the country.
28p
Yes.
The cost for first class postage in 1944 was 3 cents. You could send a postcard for 1 cent.