Still quite common- no significant collectors' value, but it an attractive stamp which most collectors like to have.
No stamp in good condition is worthless to a collector.
Mint US stamps always worth their face value if one can find use for them for postage. Common mint stamps retail for about twice face .
The minimum retail price for used stamps varies with the dealer but is around 15 to 25 cents.
As for selling common stamps-- dealers do not buy them one at a time. They get them by buying collections or accumulations of hundreds of
stamps. They usually have all the common stamps they can sell because they get them along with the scarcer stamps.
The H stamp has a value of 33 cents toward postage. The H Make-up stamps are worth 1 cent. Both are valid for postage within the US at that value.
That would be Scott Number US 3660. In mint condition is has a catalog value of $1.50 and the minimal 20 cent used.
The B stamp pictures a stylized eagle. It has a value of 18 cents. You can still use it for 18 cents worth of postage.
The value of a 4 cent black and white Freedom of the Press US postage stamp depends on its condition, rarity, and demand among collectors. In general, most stamps from that era are valued at less than face value due to their common nature.
That is Scott number US 986 It has a value of 50 cents mint and 20 cent used.
A three cent stamp will be good forever for US postage. Every US stamp issued since 1861 is valid for postage.
In used condition it is not worth anything. In mint condition it is probably worth 2 times the face value.
Forever
The US has issued many dozens of red 3 cent stamps. It will take a bit of work to identify which stamp you are referring to. I would recommend spending some time looking at a US Postage Stamp Catalog to identify the specific stamp. The bonus is that most catalogs will give you an idea of value.
The US issued a number of postage due varieties. It will require some research to determine which version you have. A catalog will assist with the ID and will provide an estimated value.
One cent
These sold for 33 cents and are still worth that amount as postage. You can only use them for postage for destinations inside the US.