Note that the designs show the year 2008. That is not necessarily when the country joins the currency union - could well be later - but of course they wanted to put some date on the pieces.
Some information in English is here ...
http://www.bank.lv/eng/main/sapinfo/coin_genesis/
... and these are the designs:
2 euro: Freedom Monument
Large picture (300K): http://www.bank.lv/images/img_lb/sapinfo/l...tade/2_Euro.JPG
1 euro: Latvian Maiden
Large picture (360K): http://www.bank.lv/images/img_lb/sapinfo/l...tade/1_Euro.JPG
10-20-50 cent: Coat of Arms (large version)
Large picture (380K): http://www.bank.lv/images/img_lb/sapinfo/l...20_10_cents.JPG
1-2-5 cent: Coat of Arms (small version)
Large picture (300K): http://www.bank.lv/images/img_lb/sapinfo/l...5_2_1_centi.jpg
Christian