I recently put my boat keys into the drink (so much for "floating key fobs"). Had to order a replacement key for my cabin door on my 268CR
www.southco.com
The parent company for Mobella at (610) 459-4000
You can contact them directly with the key number and they will ship a replacement directly to you. I recently had two spares sent. Not cheap though . . paid something like $10 each plus shipping.
Fortunately, replacement key blanks for my ignition and perko battery were readily available at our local hardware stores. For some reason a blank is not available for the Mobella hardware, even through a locksmith.
1998 268CR 7.4L B2
"La Vida Loca"