[Koha] OPAC - materials specified (MARC21 952$3)

I'm wondering if many libraries use "materials specified" (MARC21 952$3)? We do, particularly for serials, but the data is only available to staff and does not appear in the OPAC. So I have modified our OPAC display to add the extra column (see e.g. <http://opac.navalmarinearchive.com/cgi-bin/koha/opac-detail.pl?biblionumber=5986>) -- if there is no 952$3 data, the column does not get displayed. If there is any interest, I could file this as a "bug/enhancement." Best -- Paul