SEK is an abbreviation for Swedish Crowns (Kronor), the currency of choice in Sweden. One Swedish Crown is worth approximately (as of Nov 20 2002) 0.1104 US Dollars.
Notes:
- 1000 SEK
- 500 SEK
- 100 SEK
- 50 SEK
- 20 SEK
Coins:
- 10 SEK
- 5 SEK
- 1 SEK
- 50 öre (0.50 SEK)
There are also coins of other denominations, they are valid, but not very common. In my 4 years of working extra as a clerk, I've never encountered a single one of them.