Colorado Colorado is well represented in philatelic literature. Most collectors have sought to acquire material from the entire state. The market is maturing, but scarce Colorado will command a very high price.
Real opportunities exist for newer collectors by focusing on some more limited aspects of the state.
Denver, for example, is under collected. The work on territorial postmarks is over 20 years old. An update would be welcome and a strong segment to collect, providing of course deep pockets are no object. As with all types of postal history, there has been a slight slackening of demand, but the same forces that made the market last year make it this year. A promising trend is emerging among new collectors.