Yes, it is a postage stamp country. It does not refer to the small size of the country. It references the fact that they make a good revenue from the production and sale of postage stamps to collectors.
"Postage stamp countries" are tiny countries "the size of postage stamps" but that is not how they got that name. These countries issue postage stamps as a source of revenue. Most of their stamps are bought by worldwide stamp collectors rather than being used for delivering domestic mail. Four European postage stamp countries are: • Liechtenstein • Luxembourg • Monaco • San Marino
Austria is not a "postage stamp country". See Related Question, below.
Great Britain issued the first postage stamp in 1840.
liechtenstein and finish your homework
A postage stamp that is considered a first class stamp will cost you 49 cents as of September of 2014. This price seems to change pretty frequently.
Great Britain. That is in respect to their having invented the postage stamp. But they do have to display a picture of the Sovereign.
The country was Russia
Finland
Brazil.
Newfoundland
Brazil became the second country to use adhesive postage stamps in 1843.
The laws regarding this vary from country to country. In general, it is legal to paint a picture of a postage stamp. Typically it must vary significantly in size from the original.