DESCRIPTION: Electrotype copy of the chart of Monterey Harbor with a fine engraved coastal elevation view of Point Pinos from 5 miles seaward. Includes sailing directions. Chart number 5491. First issued 1852 but ca. 1880.
This is a scarce, separately issued, rolled hydrographic chart of the California coast, first published in 1852, not one of the common folded versions on thin paper that were issued with other charts in an annual report to Congress from the Coast Survey.
This antique chart was printed from an electrotype copy of the original hand-engraved copper plate, a process the U.S. Coast Survey adopted around 1850. As a soft medium, copper plates could only withstand print runs of perhaps 200 copies before the plates wore down. To enable larger print runs, a mold of the original plate was created in wax or another soft medium. Then, using an electro-chemical process ( electrotyping ), the mold was coated with a metal layer, typically copper. Printers were then able to produce output from the new electrotype copper copy, while preserving the original.
Electrotype copy no. 3. Sheet size 27"x24". Logo of the Coast Survey Office. Price when issued 15 cents.
PUBLICATION DATE: 1880
GEOGRAPHIC AREA: United States
BODY OF WATER: Bay of Monterey
CONDITION: Good.
On heavy paper with no holes, stains or other issues. One tiny marginal tear repaired archivally. Very wide margins. Evident platemark and printers' ink residue.
COLORING: None
ENGRAVER: Siebert, Hunt, McMurtrie
SIZE: 12
" x
13 "
ITEM PHYSICAL LOCATION: 63
PRICE: $750
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