Question about neck labels

Help deciphering the codes!

I understand the easy stuff:

• color - Baby Blue
• RW - rosewood
• WB - wood binding
• LT - locking tuners
• P - pearloid (I think)
• WHT CVRS - pearloid white covers

But what is SO# and LN#?





Thanks!

But what is SO# and LN#?

I'll take a guess ... Sales Order # and Lot Number # .
?

Love that BabyBlue

Thanks Elwood - that makes sense