How do I know if these are APS-1 pickups?

[SlappyTappy]

http://www.ebay.com/itm/181208777315?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649

The only markings on them are "SD 2 86" and they're from an old Kramer guitar. How do I know these are Alnico II pickups?

 

[Artie]

Re: How do I know if these are APS-1 pickups?

According to the pickup ID chart, its an SSL-1 RW/RP middle model. However, that chart doesn't even list the APS series, so its possible that its an APS-1. Either way, the "R" designates it as an RW/RP middle model.