ORIGINAL: David Fertig
That's a great piece.
My personal opinion - I'd glue back broken pieces, but not have missing pieces replaced.
It would certainly find a display spot in my house as is.
ORIGINAL: epackage
Repairable but I think it's really gonna cost you to have it done right, local museum can point you in the right direction...
That is a museum worthy piece if whole....
http://museumcollection.winterthur.org/single-record.php?resultsperpage=60&view=catalog&srchtype=advanced&hasImage=&ObjObjectName=&CreOrigin=Lancaster&Earliest=&Latest=&CreCreatorLocal_tab=&materialsearch=&ObjObjectID=&ObjCategory=&DesMaterial_tab=&DesTechnique_tab=&AccCreditLineLocal=&CreMarkSignature=&recid=1959.2729&srchfld=&srchtxt=&id=a7c8&rownum=1