PO Number | Town / Place name | Code
| C | Constantinople (Istanbul) | |
C01 | Berriew |
|
C02 | Borth |
|
C03 | Bow St |
|
C04 | Caersws |
|
C05 | Carno |
|
C06 | Cemmaes |
|
C07 | Chirbury |
|
C08 | Churchstoke |
|
C09 | Commins Coch |
|
C10 | Garthmyl |
|
C11 | Glandovey |
|
C12 | Llanbrynmair |
|
C13 | Llandinam |
|
C14 | Taliesin |
|
C15 | Pateley Bridge |
|
C16 | Chorley | |
East Cowes |
|
C17 | Brighouse |
|
C18 | Bilton |
|
C19 | Holmfirth |
|
C20 | Great Haywood |
|
C21 | St. Columb Minor |
|
C22 | New Quay, Cornwall |
|
C23 | Tywyn |
|
C24 | Plymouth and Exeter N.M.T. |
|
C25 | Mostyn Quay | |
Mostyn |
|
C26 | Darwen |
|
C27 | Cleckheaton |
|
C28 | Montevideo, Uruguay |
|
C29 | Jarrow |
|
C30 | Valparaiso, Chile |
|
C31 | Castleford |
|
C32 | Aberdovey |
|
C33 | Towyn |
|
C34 | Pennal |
|
C35 | Panama, Colombia |
|
C36 | Arica, Peru |
|
C37 | Caldera, Chile |
|
C38 | Callao, Peru |
|
C39 | Cobija, Bolivia |
|
C40 | Coquimbo, Chile |
|
C41 | Guayaquil, Ecuador |
|
C42 | Islay, Peru |
|
C43 | Paita, Peru |
|
C44 | Fishguard |
|
C45 | Mossley |
|
C46 | Hoyland | |
Everthorpe |
|
C47 | Mirfield |
|
C48 | Chipping Sodbury |
|
C49 | Stretford |
|
C50 | Ashton on Mersey | |
Sale |
|
C51 | St. Thomas, Danish W. Indies |
|
C52 | Godshill |
|
C53 | Bookley |
|
C54 | Brading |
|
C55 | Wooton Bridge |
|
C56 | Carthagena, Colombia |
|
C57 | Greytown, Nicaragua |
|
C58 | Havana, Cuba |
|
C59 | Jacmel, Haiti |
|
C60 | La Guayra, Venezuela |
|
C61 | San Juan, Puerto Rico |
|
C62 | Santa Martha, Colombia |
|
C63 | Tampico, Mexico |
|
C64 | Vera Cruz, Mexico |
|
C65 | Heywood | |
Cartagena, Columbia (Error) |
|
C66 | Woking Station | |
Woking |
|
C67 | Droylesden |
|
C68 | London and Dover T.P.O. |
|
C69 | Newton-le-Willows |
|
C70 | Cosham |
|
C71 | Willington |
|
C72 | Cheetham Hill |
|
C73 | Eccles |
|
C74 | Middleton, Manchester | |
Pisco and Cicha Islands, Peru |
|
C75 | Newchuch, Manchester |
|
C76 | Prestwich, Manchester |
|
C77 | Radcliff, Manchester |
|
C78 | Wilmslow |
|
C79 | P & O Mail Boat | |
Purley, Surrey |
|
C80 | Helperby |
|
C81 | Bahia, Brazil |
|
C82 | Pernambuco, Brazil |
|
C83 | Rio de Janeiro, Brazil |
|
C84 | Aberayron |
|
C85 | Enfield |
|
C86 | Puerto Plata, Dominican Republic |
|
C87 | San Domingo, Dominican Republic |
|
C88 | St. Jago de Cuba, Cuba |
|
C89 | Dudley, Northumberland |
|
C90 | Burgess Hill |
|
C91 | Harrow | |
West Malling |
|
C92 | Nayland |
|
C93 | Twickenham |
|
C94 | Teddington |
|
C95 | Hampton |
|
C96 | Sunbury |
|
C97 | Elstree |
|
C98 | Newhaven |
|
C99 | Broughton-in-Furness |
|