This is a quote from Prestige Philately Auction 200 describing the term L C ROOMhttp://www.prestigephilately.com/au...atalogue.pdf
"1858 cover front only from the Cape of Good Hope "per Steamer Prince Alfred", to "Box No 190/
Government Post office/Melbourne" with Triangle 4d blue (2½ margins, cut-into at lower-left),
largely fine 'DETAINED ON/BOARD OF SHIP' h/s in red applied at Melbourne where rare '.LC./
DCc31/1858' d/s (large dots before & after 'LC'; ERD) also applied, forwarded to "White Hills/
Sandhurst", minor blemishes. [Undelivered mail was "called" in the Letter Carriers (LC) Room. If the
addressee was known, the letter was delivered or forwarded, as in this instance. If unknown, the item
was advertised: see "Philately from Australia" (March 2014)]"