| Marking | Description * | @ |
| KPAЛbEBИHA CPБИJA |
Serbia |
| KPAЛbEBИHA CPБA XPBATAИ CЛOBEHAЦA |
Yugoslavia |
| KPAJbEBCTBO C. X. C |
Yugoslavia |
| KPALJEVSTVO SRBA, HRVATA I SLOVENACA |
Yugoslavia |
| KPbIMCKЛΓO KPAEBOΓO ПPABKTEЛbCTБA |
South Russia- Crimea |
| KPCT.A |
Yugoslavia: postal tax stamps |
| KPHTH |
Crete |
| KR. |
(currency): Austria, Baden, Bavaria, Germany, Hungary or Wurttemberg {Kronen (crown)} |
| Kr. 1.98 |
(overprint on stamps of Sweden): parcel posts |
| Kr. 2.12 |
(overprint on stamps of Sweden): parcel posts |
| KRAlb. UPHATOPA |
Montenegro |
| KRALJEVINA SRBA, HRVATA I SLOVENACA |
Yugoslavia {Kingdom of Serbia, Croatia and Slovenia}. |
KREUZER  |
(currency): Austria, Baden, Bavaria, Germany, Hungary or Wurttemberg |
Wurttemberg |
| KRONA |
(currency): Sweden |
 |
| KRONE |
(currency): Austria (1899-1952) |
| KRONEN |
(currency): Austria (1899-1952) |
| KUPA |
(overprint on stamps of Yugoslavia): Italian occupation (1941-42) |
| KURLAND |
(overprint on stamps of Latvia): German occupation (1945) |
| KURUS |
Turkey |
| KUWAIT |
(overprint on stamps of Great Britain): Kuwait (1948-58) |
 |
| KUWAIT |
(overprint on stamps of India): Kuwait (1923-45) |
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