According to the part catalog for your boat the part number is listed as: [TABLE]
[TD]COMPASS 3" DIAL FLUSH MOUNT
Go here http://maxumcustomercare.com/
and chose your year and model to get to the parts catalog.
That doesn't help much, though, because that is probably the P/N that Maxum used and not likely to be Danforth's P/N. Nevertheless, you could probably call US Marine's customer care number and see if they can find the 70101 part number (likely used in a whole bunch of Bayliners/Maxum/Searay/etc boats).