**check your support page and then put the Serial number to here**https://supportprofile.apple.com/
http://www.chipmunk.nl/klantenservice/applemodel.html
for me:
38mm Sport White (mine): Week 14
38mm Sport White (gf): Week 15
I'm surprise how late they were produced.
Out of curiousity does your profile page show Standard 42mm or more descriptive? The pic on my profile shows a link bracelet.