Hey, supersue- I'm not sure how the DB side looks at this(I'm primarily a bass guitarist)but on the BG side you need to be a supporting member to discuss selling anything, otherwise the thread is seen as a veiled *FS*ad.
Beyond that, *fretboard* is indeed a word, & I think the paert of the banjo you're describing is known the 'head'
Most importantly, welcome(back?

)to TB.