Topical stamp collecting

[4] In fact, so many stamps have been issued that some popular themes, such as ships or birds, have become nearly impossible to complete, and topical collectors may specialize further, such as by looking for only square-rigged sailing ships, or only flightless birds.

Since most types of stamp designs are commonly available and inexpensive, acquiring them is mostly a matter of poring over the stamp catalog looking for relevant types, and learning enough about the topic to recognize subtle connections.

[5][6] Online marketplaces and trade platforms are the most common way of collecting new stamps.

[citation needed] Topical collecting is a recognized category for competitive exhibitions and has its own Commission with the FIP (Fédération Internationale de Philatélie).

[7] Some topics include: Stamps with an anarchist theme were issued during the Spanish Civil War by the Confederación Nacional del Trabajo.