host = $host; $this->dbUser = $dbUser; $this->dbPass = $dbPass; $this->dbName = $dbName; $this->connectToDb(); } /** * Establishes connection to MySQL and selects a database * @return void * @access private */ function connectToDb() { // Make connection to MySQL server if (!$this->dbConn = @mysql_connect($this->host, $this->dbUser, $this->dbPass)) { trigger_error('Could not connect to server'); $this->connectError = true; // Select database } else if (!@mysql_select_db($this->dbName,$this->dbConn)) { trigger_error('Could not select database'); $this->connectError = true; } } /** * Checks for MySQL errors * @return boolean * @access public */ function isError() { if ($this->connectError) { return true; } $error = mysql_error($this->dbConn); if (empty($error)) { return false; } else { return true; } } /** * Returns an instance of MySQLResult to fetch rows with * @param $sql string the database query to run * @return MySQLResult * @access public */ function &query($sql) { if (!$queryResource = mysql_query($sql, $this->dbConn)) { trigger_error('Query failed: ' . mysql_error($this->dbConn) . ' SQL: ' . $sql); } else { return new MySQLResult($this, $queryResource); } } } /** * MySQLResult Data Fetching Class * @access public * @package SPLIB */ class MySQLResult { /** * Instance of MySQL providing database connection * @access private * @var MySQL */ var $mysql; /** * Query resource * @access private * @var resource */ var $query; /** * MySQLResult constructor * @param object mysql (instance of MySQL class) * @param resource query (MySQL query resource) * @access public */ function MySQLResult(&$mysql, $query) { $this->mysql = &$mysql; $this->query = $query; } /** * Fetches a row from the result * @return array * @access public */ function fetch() { if ($row = mysql_fetch_array($this->query, MYSQL_ASSOC)) { return $row; } else if ( $this->size() > 0 ) { mysql_data_seek($this->query, 0); return false; } else { return false; } } /** * Returns the number of rows selected * @return int * @access public */ function size () { return mysql_num_rows($this->query); } /** * Returns the ID of the last row inserted * @return int * @access public */ function insertID () { return mysql_insert_id($this->mysql->dbConn); } /** * Checks for MySQL errors * @return boolean * @access public */ function isError() { return $this->mysql->isError(); } /** * Returns an instance of MySQLResult to fetch rows with * @param $sql string the database query to run * @return MySQLResult * @access public */ } ?> 18th Century Australian Countermarked Holey Dollar - Birmingham Museums & Art Gallery Information Centre
             
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18th Century Australian Countermarked Holey Dollar

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Birmingham Museums and Art Gallery

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Basic Information

Accession Number:1971N707
Collection:Coins & Medals
Date:1799 - 1813

Maker Information

Manufacturer:Mexico Mint - View history

Notes

'Holey dollars' were made in 1813, when the colony of New South Wales was suffering from a severe shortage of coins. The governor had 40,000 Spanish silver 8 reales coins cut up. A round disc was cut from the centre of each coin and the resulting two parts were then stamped with their value in British money. The discs were worth 15 pence and the outer rings (like this) 5 shillings. Ironically the work was carried out by William Henshall, who had originally been transported to Australia for forgery!

Purchased from Bristol City Museum, 1971.

Further Information

Reign:King Charles IV
Production Period:18th century
Material(s):Silver
Denomination:Dollar - countermarked
Mint Mark:Mexico
Currency:Australia
Place of Origin:Mexico

Associated People

Associated Places

Dimensions

Diameter:17 mm

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