Hometown Buffet, Old Country Buffet, Country Buffet, and Ryan's restaurants
(Ovation brand restaurants) offer the following printable coupon.
Buy One Adult Lunch or Dinner Buffet, Get One 50% Off [fishbowl.com]
if the above link doesn't work, use the attachment
Dine in only. Not valid on Senior meals.
Expires December 15, 2017
Note, many locations have closed, so double-check before going.