The Lovecpokladu.cz are rising about 4 years katlogy interesting. Both are online and free. Catalog currently includes coins from the Roman Empire to modern Czech history. Includes descriptions nejenemo coins ael also finding their states. Catalog artifacts is even more sophisticated.
Both catalogs are currently only in Czech language, so you need to use Goole translator. Still, I think they are exceptionally vation than and in addition lets you create your own maps of findings.