Yes, bottom. Serial Number and Sony support are the best bet for finding when it was made.
sorry nothing says serial # theres 2 #'s us:cxsmm01brd02d110 ic: 3652b-rd02d110 FCC id pd9wm3945abg
oh yes i did try sony's web sight and they asked for a vgn number that is not showing anywhere
the best answer was none of these the model number on the bottom lead you to another number on the front of the screen and that was thanks to the sony web sight that i found it. the only comment i got was from one person which i had already found that info