Mailing A Coin In Envelope

Sure, all the time. Just make sure it's protected and as flat as possible, and like was suggested, limit the value.

I just mailed one....

I just shove a 2x2 in an envelope and call it good. I never mark ridged or anything else, I just throw on a stamp and call it good.

i ship mine in a cheap card from the dollar store. I have not had a problem yet.

I do it all the time with Dimes and Cents.
I put "non-machinable" for any coin worth over $10.
Coins less than $10, a stamp.

Coin over $20, padded envelope with tracking.
$2.04 postage.

As a lot of others have mentioned , Ive done this several times without problem and out of close to a hundred I've had only one not make it , or that's what the buyer said anyways ...
By doing just as other mentioned and simply tape the 2x2 inbetween a piece of cardboard that I cut and make into a birthday card type shape ....
I usually fold a small piece of paper around the cardboard 2x2 before taping it to my cardboard that way when the tape is removed it doesn't rip or leave residue on the actual 2x2 holding the coin ...


One thing I will suggest , is not to do this with a coin that is worth more than 10 bucks ...
I only do this with lower value coins , as it's tough to sell a coin that's worth less than 10 bucks if you have to charge almost 3 in shipping ...
I've never sent anything larger than a quarter this way , I have actually sent 2 quarters , or 3 dimes in the same envelope several times that have made it without a problem ...
I do however use a 71 cent 2 ounce stamp rather than a 49 cent stamp even though most of these envelopes weigh less than an ounce this was a suggestion from my local postal worker ...

I make sure to tape the whole letter BUT the area where they stamp it and where you put the stamps. I usually double tape it and the buyer has always received the coin without any issue. It just prevents the letter from ripping.

When using a paper envelope I always tape the edges to prevent it from ripping.