Some collectors are unwilling to share the rare items publicly as doing so risks decreasing the value of their prototypes.

Some notable collectors were Pope Boniface VIII, Emperor Maximilian of the Holy Roman Empire, Louis XIV of France, Ferdinand I, Henry IV of France and Elector Joachim II of Brandenburg, who started the Berlin Coin Cabinet ( German: Münzkabinett Berlin ).

Some collectors are completists and seek an example of every type of coin within a certain category.

* Copy collections: Some collectors enjoy acquiring copies of coins, sometimes to complement the authentic coins in their collections.

Some collectors choose to focus on a specific subtopic within their area of general interest.

Some countries authorize the production of postage stamps that have no postal use, but are intended instead solely for collectors.

Some collectors assume that it was also supplied as OEM product, Multivox CB-50.

Some collectors prefer a traditional stamp album.

Some collectors are generalists, accumulating merchandise, or stamps from all countries of the world.

Some collectors collect only in childhood while others continue to do so throughout their lives and usually modify their aims later in life.

Some novice collectors start purchasing items that appeal to them, and then slowly work at acquiring knowledge about how to build a collection.

Some collectors consider this as a third series but since unlike all series it was not published in the official journal of the European Union, it is actually an amendment and not a new series.

Some stamp collectors are interested in the cancellations themselves, on or off cover, of a particular country or issue, or collect a specific type of cancellation, such as fancy cancels.

Some art museums and art collectors feature American Western Art.

Some shell collectors find their own material and keep careful records, or buy only " specimen shells ", which means shells which have full collecting data: information including how, when, where, in what habitat, and by whom, the shells were collected.

Some collectors may specialize in specific fields ( such as Nobel Prize winners ) or general topics ( military leaders participating in World War I ) or specific documents ( i. e., signers of the Charter of the United Nations ; signers of the U. S. Constitution ; signers of the Israeli Declaration of Independence ; signers of the Charter of the European Common Union ; signers of the World War II German or Japanese surrender documents ).

Some collectors take note of which celebrities are the most gracious or the least forthcoming.

Some stamps, intended only for sale to stamp collectors have been issued without gum, for instance the United States Farley's Follies souvenir sheets of 1933.

Some of these cymbals are now collectors ' items.

Some of the early Moulton bicycles are today considered to be collectors ' items.

Some klystrons include depressed collectors, which recover energy from the beam before collecting the electrons, increasing efficiency.

Some collectors and investors also try to anticipate future trends and buy low now, this however, is difficult to get right and may take a long time to pay off.

Some limited edition sets from past collectors have drawn up to three times the original value.

Some coil issues will require collectors to save longer than even the PNC5 mentioned earlier.

Some people even focus on amateur telescope making as their primary interest within the hobby of amateur astronomy.

Some expressed incomprehension or even hostility, varying from a rejection by the archaeological mainstream of what they saw as an archaeoastronomical fringe to an incomprehension between the cultural focus of archaeologists and the quantitative focus of early archaeoastronomers.

" Some modern readers find this narrow definition disappointing, but his focus was on the conduct of military operations in war, not on the full range of the conduct of politics in war.

Some Christian groups focus on simply refraining from gay sex, such as Courage International and North Star.

Some definitions focus on the question of the probability of encountering a given condition of a system once characteristics of the system are specified.

Some party and pub games focus on the doing of a particular act of skill, rather than on either the amount a participant drinks or the speed with which they do so.

Some historians consider that a new era of the gay rights movement began in the 1980s with the emergence of AIDS, which decimated the leadership and shifted the focus for many.

Some authors scrupulously avoid such technology as faster-than-light travel, while others accept such notions ( sometimes referred to as " enabling devices ", since they allow the story to take place ) but focus on realistically depicting the worlds that such a technology might make possible.

Some parties openly profess their focus on a particular group ; for example, the Dravida Munnetra Kazhagam's and the All India Anna Dravida Munnetra Kazhagam's focus on the Dravidian population, and the Shiv Sena's pro-Marathi agenda.

Some social democrats known as " economists " argued that the party should focus on helping industrial workers improve their lot in life.

Some online loyalty programs focus on " other-directed " consumers including Upromise, Schoolpop, The BSP Rewards Network and iGive. com.

Some groups focus solely on one cultural tradition, while others draw from several.

Some economic experts have argued that the development gap between China and other emerging economies such as Brazil, Argentina and India can be attributed to a large extent to China's early focus on ambitious infrastructure projects, notably mass transport and transit related projects.

Some religions focus on the subjective experience of the religious individual, while others consider the activities of the religious community to be most important.

Some focus on porting games from one system to another.

Some focus on translating games from one language to another.

Some approaches for resolving the paradox focus on the inductive step.

Some receptions, especially if the family's culture or religious faith prohibits alcohol or dancing, focus on dessert.

Some people feel that the deletion of homosexuality as a mental disorder from the DSM-III and the ensuing creation of the GID diagnosis was merely sleight of hand by psychiatrists, who changed the focus of the diagnosis from the deviant desire ( of the same sex ) to the subversive identity ( or the belief / desire for membership of the opposite sex / gender ).

Some people have argued that communitarianism's focus on social cohesion raises similarities with nationalistic communism, or various forms of authoritarianism, although supporters contend that there are substantial differences between communitarianism and authoritarianism, and that communitarianism has very little in common with Communism, which they see as not really valuing individual liberty at all.

Some, such as geographer Michael Watts, focus on political impacts on access to environmental resources.