well, an old timer at a bearing house knew exactly what it was, and crossed it to a current timken - salty! but the linked chart shows the originals as -x vs the -y that mine are. ?
and it isn't odd wear that i see - mine are 'barrel' style bearings, and maybe that's why people don't bother anymore, hence rare=$. $250/set - ouch!

but this is nuts! - for a '93 suzuki sidekick, same timken numbers - $68/set
and the same bearings are listed for selica/supra diff, but i noticed from the pics that the cross-referenced timkens are not barrel style