Oob 87 - Bulgaria

[FASTBOAT TOUGH]

Don't know if this helps but, here's a table from the below source. Note the top of the table shows T-72S and other variants and also in the bottom 1/4 of the table it shows the ammo types and seems to indicate the Russians might have had a BM-42M round with a DU penetrator as again the table deals with export T-72 variants as well (But I believe all variants are now available for export now, but not sure.). This round is also shown for the T-80U as well from this source.
http://www.globalsecurity.org/milita...t-72-specs.htm and http://www.globalsecurity.org/milita...ussia/t-72.htm

Regards,
Pat