Old Next Cruise Certificates

[socialsea]

My husband and I bought a next cruise certificate a long time ago (I'm thinking at least 10 or 12 years ago). It was a $200 one. I went to redeem it today and it took $200 off of my deposit but they said the OBC  was only $50. I thought the old certificates were worth more OBC than that. Does anyone know?

[FionaMG]

It depended on the length of the voyage. I don't have the original flyer with the T&Cs and I can't remember the exact details, but this is the letter I received for the one I purchased back in December 2013: