my $altscript = 0;
if ($marcflavour eq 'marc21' && $tag eq '880') {
my $sub6 = $field->subfield('6');
if ($sub6 =~ /^(...)-\d+/) {
if ($sub6 && $sub6 =~ /^(...)-\d+/) {
$tag = $1;
$altscript = 1;
}
-