EPCS16SI8N Part markings

[Altera_Forum]

I have a question about the part markings. On the second line of the part markings the first (bottom left) letter is an "S". I am being told by my engineer that the second line should always start with a "9". Does anyone have any documentation as to what the "S" is? Thank you for your time.

[Altera_Forum]

Have a look at this Document 

 http://www.altera.com/literature/pcn/pcn0514.pdf?gsa_pos=1&wt.oss_r=1&wt.oss=epcs part marking (http://www.altera.com/literature/pcn/pcn0514.pdf?gsa_pos=1&wt.oss_r=1&wt.oss=epcs part marking)  or maybe better  http://www.altera.com/literature/pcn/pcn0801.pdf?gsa_pos=2&wt.oss_r=1&wt.oss=epcs16si8n pcn (http://www.altera.com/literature/pcn/pcn0801.pdf?gsa_pos=2&wt.oss_r=1&wt.oss=epcs16si8n pcn)  But they only identify assembly site “9” = Malaysia “B” = Amkor Philippines “Z” = Morocco  but no "S"