Netsock gave you some good info about this prop. Here is a little mo

The "645" is the dye/case numbre as Netsock said. It was also known as the
"Wheel Number". Basically it's a part-number specifying a specific prop.

It probably isn't worth a fortune - but to someone that is restoring a boat
that
takes that prop, to have an origional prop that has not been used at all is
worth something.

I tried to look up what model(s) of Chris-Craft this prop came from but
have not found it yet. ~ If you want to sell it you should try to find the
boat model(s) and adversite is that way.

When I was restoring a CC I did look on ebay for parts. And there often
are Chris Craft parts on eBay, so that may be one OK place to sell it.

Other soucres of info / places to sell:

The Mariner's Museum in Newport News VA (www.mariner.org)
has a "Chris Craft Archives" division run by Jerry Conrad.
Phone (800-565-6846). Give them a call, they will have any
information you need.

Check out Antique Classic Boating Society at (www.acbs.org)


These people sell Chris-Craft and other old boat parts, and might
pay you something and/or give you information:
Chris-Craft-Parts.com
ClassicBoat.com
OldMarineEngine.com

I'm not sure if your prop was from a "Sea Skiff" model, but
this site does have a part-for-sale secion:
www.SeaSkiff.org

Hope That Helps,
Gary