Hohner TWP Classic - N

I’m trying to do an Ancestry.com search on my Hohner A/E TWP Classic-N guitar. I don’t see a serial number anywhere. I bought it off eBay about 15 years ago. I’m thinking of selling it, but every time I take it down to play, I decide to keep it around a little longer. Can anyone tell me anything? I believe it might have been manufactured between 1985 and 1993.