S to Z

_{The information in
italic has to be confirmed, the rest comes mainly from RPW3 or
international organisations sources.}

_Country	_OVAL	_{Used between :}	_{or since :}	_{ISO 2/3}
_{Saarland, now in Germany}	_SA	_{25-35, 45-46 now in D}
_{San Marino}	_RSM		_32-	_SM/SMR
_{Sao Tome and Principe}				_ST/STP
_{Sarawak, now in Malaysia}	_SK	_{55-63 now in MAL}
_{Saudi Arabia}	_SA		_begin.70s-	_SA/SAU
_{Saudi Arabia (unofficial Oval seen (small black/orange))}	_SAT
_{Saudi Arabia (unofficial Oval seen in France)}	_AS
_Senegal	_SN		_62-	_SN/SEN
_{Serbia (unofficial Oval seen in France, 90's)}	_SER
_{Serbia, now in Serbia Montenegro}	_SB	_{11-18 now in SCG}
_{Serbia Montenegro}	_SCG	_2003-
_Seychelles	_SY		_38-	_SC/SYC
_{Siam, now Thailand}	_SM	_{30-55 now T}
_{Sierra Leone}	_WAL		_37-	_SL/SLE
_Singapore	_SGP		_52-	_SG/SGP
_{Singapore (unofficial Oval list)}	_SG
_Slovakia	_SO	_{39-45, 93 now SK}
_Slovakia	_SQ	_{93 now SK}
_Slovakia	_SK		_93-	_SK/SVK
_Slovenia	_SLO		_91-	_SI/SVN
_{Solomon Islands}				_SB/SLB
_{Somali French Coast, now Djibouti (reported Oval)}	_CFS	_{now RDD ?}
_Somalia	_SO		_{begin. 70s-}	_SO/SOM
_{Somalia Protectorate, now in Somalia}	_SP	_{38-60 now in SO}
_{South Africa}	_SAU	_{33-56 now ZA}
_{South Africa}	_ZA		_36-	_ZA/ZAF
_{South Georgia and South Sandwich Islands}				_GS/SGS
_{South Korea}	_ROK		_71-	_KR/KOR
_{South Korea (unofficial Oval list)}	_KO
_{South West Africa, now Namibia}	_SWA	_{35-66 now NAM}
_{Southern Rhodesia, now Zimbabwe}	_RSR	_{60-79 now ZW}
_{Southern Rhodesia, now Zimbabwe}	_SR	_{32-60 now ZW}
_{Soviet Union, now split}	_SU	_{26-91 now RUS+UA+BY,...}		_{SU/SUN reserved}
_Spain	_E		_10-	_ES/ESP
_{Spanish Morocco, now in Morocco}	_ME	_{35-52 now in MA}
_{Spratly Islands - China sea}				_{SI reserved}
_{Sri Lanka, former Ceylon}	_CL		_32-	_LK/LKA
_{St Helena}				_SH/SHN
_{St Kitts and Nevis}				_KNKNA
_{St Lucia}	_WL		_32-	_LC/LCA
_{St Pierre and Miquelon}				_PM/SPM
_{St Vincent and The Grenadines}	_WV		_32-	_VC/VCT
_{State of North Borneo, now in Malaysia}	_SNB	_{38-55 now MAL}
_{Straits Settlements, now in Malaysia}	_SS	_{32-52 now MAL+SGP}
_Sudan	_SUD		_63-	_SD/SDN
_Suriname	_SME		_36-	_SR/SUR
_{Svalbard and Jan Mayen}				_SJ/SJM
_Swaziland	_SD		_35-	_SZ/SWZ
_{Swaziland (unofficial 1926 Oval list)}	_SID
_Sweden	_S		_11-	_SE/SWE
_Switzerland	_CH		_11-	_CH/CHE
_Syria	_SYR		_52-	_SY/SYR
_{Syria and Lebanon, now split}	_SL	_{31-52 now SYR+RL}
_Taiwan	_RC		_32-	_TW/TWN
_Tajikistan	_TJ		_96?-	_TJ/TJK
_{Tangier, now in Morocco}	_MT	_{33-56 now in MA}
_{Tanzania-Tanganyika (2 Ovals, 1 ISO)}	_EAT		_38-	_TZ/TZA
_{Tanzania-Zanzibar (2 Ovals, 1 ISO)}	_EAZ		_38-	_TZ/TZA
_Thailand	_T		_55-	_TH/THA
_{Thailand (unofficial Oval list)}	_TAI
_Togo	_TT	_{32-52 now TG}
_Togo	_TG		_62-	_TG/TGO
_{Tokelau Island - South Pacific}				_TK/TKL
_Tonga				_TO/TON
_{Trengganu, now in Malaysia}	_TU	_{35-48 now in MAL}
_{Trieste, now in Italy}	_TS	_{45-54 now in I}
_{Trinidad and Tobago}	_TT		_64-	_TT/TTO
_{Trinidad and Tobago}	_TD	_{38-64 now TT}
_{Tristan da Cunha}				_TA
_{Trucial Oman, now Oman}	_TO	_{60s now ?}
_{Trust Territory Pacific Island, TTPI}		_{now FM, FW, MH, MP}		_{PC/PCI reserved}
_Tunisia	_TN		_57-	_TN/TUN
_{Tunisia (unofficial Oval list)}	_TU
_Turkey	_TR		_35-	_TR/TUR
_{Turkey (reported RPW3 p577)}	_T	_{now TR}
_Turkmenistan	_TMN	_{93-96? Now TM}
_Turkmenistan	_TM		_96?-	_TM/TKM
_{Turks and Caicos}				_TC/TCA
_Tuvalu				_TV/TUV
_Uganda	_EAU		_38-	_UG/UGA
_Ukraine	_UR	_{91 now UA}
_Ukraine	_UA		_92-	_UA/UKR
_{Ukraine (unofficial Oval seen in France (80s'), cyrillic ?)}	_YK
_{United Arab Emirates}				_AE/ARE
_{United Kingdom}	_GB		_10-	_GB/GBR
_{United Kingdom (unofficial Oval seen in France 2/98)}	_U,K,			_{UK see GB}
_{United States of America}	_USA		_52-	_US/USA
_{United States of America (1912 Encyclopedia Oval list)}	_US
_{Upper Volta, now Burkina Faso}	_RHV	_{70s-90s now BF}		_{HV/HVO reserved}
_{Upper Volta, now Burkina Faso}	_HV	_{61-70s now BF}
_Uruguay	_U	_{49-70s now ROU}
_Uruguay	_ROU		_{end 70s-}	_UY/URY
_Uzbekistan	_UZ		_96?-	_UZ/UZB
_Vanuatu				_VU/VUT
_{Vatican (unofficial Oval list)}	_SCV
_{Vatican City State}	_V		_31-	_VA/VAT
_Venezuela	_YV		_55-	_VE/VEN
_Vietnam	_VN		_53-	_VN/VNM
_{Wake Island}				_{WK/WAK reserved}
_{Wallis and Futuna Islands}				_WF/WLF
_{Western Sahara, now in Morocco}				_EH/ESH
_{Western Samoa}	_WS		_62-	_WS/WSM
_Yemen	_YAR		_{begin. 70s-}	_YE/YEM
_{Yemen Democratic Republic, now in Yemen}	_ADN	_{38-80 now in YAR}		_{YD/YMD reserved}
_Yugoslavia	_YU	_{52-2002 no}_{w SCG, SLO, HR, MK}		_YU/YUG
_Yugoslavia	_Y	_{36-52 now SCG, SLO, HR, MK}
_{Zaire (unofficial Oval seen in France)}	_ZAIRE
_{Zaire, now Democratic Republic of Congo}	_ZRE	_{81-99 now CGO}		_ZR/ZAR
_{Zaire, now Democratic Republic of Congo}	_ZR	_{73-80 now CGO}
_Zambia	_Z		_66-	_ZM/ZMB
_Zimbabwe	_ZW		_{end 70s-}	_ZW/ZWE
_Zimbabwe	_ZM	_{end 70s now ZW}