post card with 1 cent stamp date of 1911
FDR appeared on a 3-center as part of a memorial set for him soon after he died. He died in 1945; the stamp appeared in 1945 or 1946. The same set had stamps of 1 cent, 2 cent, and 5 cent denominations, all with the same portrait, but different scenes related to his life . I am pretty sure that Theodore Roosevelt never was on a 3 cent stamp.
The H stamp is worth 33 cents. Yes, you can add a 1 cent stamp to cover 34 cents worth of postage.
1 cent
1 cents
You can purchase 1 cent or 2 cent stamps.
1 cent.
A 5-cent 1946 Roosevelt stamp is worth about $1, but it depends on the postmark and the design on the stamp. Some postmarks of this stamp could be worth $11 or more.
1 cent.
1c 1 cent
Without knowing the date on the stamp, a description and condition, it is impossible to value a stamp.
The "H" rate makeup stamp is worth one cent US. It was used with the pre-rate change 32 cent stamp to make the new 33 cent cost of a first class letter.