Coin books contain a wealth of information. Many include mintage figures and prices. The problem with prices is they change regularly, so the question comes up whether a coin book is current. The answer is it depends on the coin.
Some coins change slowly on value. In particular, copper, bronze, and nickel coins often are slow to change in value. Of course, extremely rare coins can fluctuate as the latest coin of a kind to be sold at auction resets the expected value.
Precious metal coins that are not extremely rare are not so stable. Value can change overnight. No coin book can be accurate for coin values tracking the precious metals market. In addition to the precious metals market one must also take into account that the mintage figures can be misleading, since many common precious metal coins can be melted down when their metallic value soars.