The postmark of the letter sent by the State Patent Office to Shenzhen Longhua is "Guangdong Shenzhen ★ Baoan Longhua 1". Who can tell me what the postmark of Baoan Longhua 1 means?

Brief introduction of postmark nouns! ! ! Classification: miscellaneous

A postmark with an irregular cross section. Such as flat stamp, square stamp, strip stamp, oval stamp, polygonal stamp, etc. They are all special-shaped stamps.

Sun-moon datestamp, also known as Ming-stamp, is a seal engraved with sun-moon graphics. 1900, the Boxer Rebellion was suppressed, and the rest continued to fight in Shandong. Some post offices are postmarked with the sun and the moon, which form a "bright" space to show "seeking for the future". It was later banned by the Qing Dynasty. This stamp is widely used by the bureaus under the jurisdiction of JIAOZHOU General Administration. The picture shows the sun and moon stamps of Guangxu of Shandong Yizhou Bureau on August 10th.

Respectfully stamp the postmark with a framed postmark. /kloc-was mainly used in some European countries in the middle of the 0/9th century. For example, in Sicily, Italy, 1859 began to use the door frame postmark with a portrait stamp of Fernand II to show respect for the king of that country. Spain and India also use the respected postmark.

A silent postmark without any words is also called a silent postmark. In early Europe, L stamps had no postmark on the surface and had many shapes. Such as respectful, thumb-shaped, the eight diagrams postmark used by China Post in Qing Dynasty, and the uneven self-circle and black cross postmark used by Russian left-behind corps around 1895 all belong to this postmark.

The front of the postmark. The surface of the current ordinary postal datestamp in People's Republic of China (PRC) is round with a diameter of 25 mm; ; For international mail service, the datestamp engraved with Chinese Pinyin and the datestamp engraved with minority characters in ethnic autonomous areas have a diameter of 30mm. The dial surface is divided into five parts: upper half ring, upper crescent, nail groove, lower crescent and lower half ring. The four sides of the rectangular nail slot hole in the middle of the poke surface are added with carved edges.

A slot with a time nail embedded in the middle of the postmark surface. The nail groove of People's Republic of China (PRC) Post is 18X6mm, and the nail is T-shaped. Arranged from left to right by year, month, day and hour.

The upper half ring is commonly known as the upper half ring. The ring-shaped part above the crescent on the surface of the postmark. Used to indicate the name of a province, city or autonomous region; The date stamp used by the international mail exchange bureau and the exchange station is engraved with the country name; The train and ship escort class is engraved with the abbreviation of the starting and ending place of the train (ship) line.

The upper crescent postmark is located between the upper half ring and the waist frame. Crescent moon is usually left blank.

The position between the lower half ring of the lower crescent postmark and the nail groove. The serial number of the date stamp of the bureau and the office is engraved on the next crescent: the post office under the jurisdiction of a province or autonomous region has regulations on the establishment of production departments and units, and the branch code should be engraved before the stamp number.

The lower half ring of the lower half ring is commonly known as the following. The ring-shaped part below the crescent on the surface of the postmark. Used to indicate the bureau name, name (number) or postal code; Date stamp used for handling international mail business and engraving Chinese phonetic place names; The name of the dispatching room is engraved in brackets below the datestamp of the train and ship escort class; Chinese place names and local common minority place names are engraved under the datestamp in minority areas, with Chinese on the left and minority languages on the right.

The part between the postmark and the top border of the upper pane. In addition to the waist frame postmark, early postmarks generally have spacing lines, whether one or two of them refer to the highest case, and more provincial and county place names are engraved.

The part between two spaced lines on the postmark surface of the middle pane. The three-format postmark indicates the year, month, day and time.

The lower pane postmark is located between the spacing line on the surface of the stamp and the lower border. Early postmarks in China generally had one or two spacing lines except waist frame postmark. One or two of them refer to the lowest case, engraved with the names of counties and cities under provincial jurisdiction.

The left part between two spaced lines on the postmark surface of the middle left pane. Three-format postmark and octagonal "postage prepaid" datestamp have this box, which is specially designed for the year, month, day and Shi Yu.

The right part between two spaced lines on the postmark surface of the middle right pane. Three-format postmark and octagonal "postage paid" datestamp all have this box. The former has a "time" nail, while the latter has a stamp number.

Note: Excerpted from China Philatelic Dictionary.