Medieval coinage went through development as medieval economy changed between 1000 and 1500. Bohemia and Saxony had one of the largest silver deposits in medieval Europe; so, silver coins were rather abundant. Silver coins are often found in medieval peasant cottages. From 1200 onward it was much easier to collect taxes through silver content over other goods. Medieval cities and markets were established in Holy Roman Empire such way, that no peasant needed to walk more than one hour to nearest market place. Bohemia had 1 million people in 1200 and there was 2 to 3 millions of silver denari in circulation. Prior Black Death the population increased to 3 millions, while coinage barely doubled, which was reason, why so many people in the feudal era had hard time to own coin if ever.
Wealthy landlords did not care much for silver coins and sought out gold coins (ducats or florints). Kingdom of Hungary was the biggest medieval supplier of golden coins in Central Europe from wealthy ore mines in current Central Slovakia (there is a 150km long range called Slovakian Ore Mountains). As population boomed in golden age of feudalism- which in Central Europe coincided around 1350- the circulation of small silver coins plummeted due hoarding. The banking crisis of 1390-1396 in Bohemia was tied to disappearing small coins where poor masses lacked a means to pay taxes, while silver mines produced tons of it. The monarchy wanted to prevent hoarding silver by decreasing silver content, which had exactly opposite effect. Older coins were even sought, prices went up due inflation, and bankrupted merchant homes in Germany demanded silver coins. The creditors even collected army and sieged Prague in 1396 to demand payment in good silver coins. In the 15th century due plagues and constant warfare, population shrunk by 40%, prices decreased, and silver coin circulation returned back to balance.
Coins are excellent source of economic conditions in country and trades routes. If country was under economic stress, the coinage suffered. This evident in the Roman Empire where silver content decreased in the 3rd century. Scandinavians coinage is often excavated in Central Europe due Hansa trade system. 30Years War was so devastating in Holy Roman Empire that coinage in Hapsburg realm was devaluated by almost 90%.