dating a D50 with SN not listed on westerlyguildguitars.com

I'm trying to date a D50 with a Westerly soundhole tag and SN DD101xxx but cannot find any D50 serial numbers listed with a "DD" prefix on www.westerlyguildguitars.com or the guild site or any others -- those lists appear to all be the same. Anyway, I'm guessing this is a late 1990s or early 2000s model but would be more comfortable if I could figure it out -- have any of y'all run into this question before?

More likely early to mid 80's. Check 'Dating a Guild' from the interweb. There is a PDF file that's quite useful.

This pdf should help. Definitely the '80s.

http://support.guildguitars.com/2012/dating/Dating_Your_Guild.pdf