Ya done good pilgrim.
DCAM coins have a rather stark contrast between the fields (flat areas) and the devices (raised details). The initial proof dies have the devices blasted to produce almost microscopic pores. The fields are polished to a mirror finish. The result is frosty devices and mirror fields. The first coins off the dies exhibit a "black and white" type contrast. As the dies wear, the contrast is diminished. Almost all modern proofs will be either DCAM or CAM because they discard the dies before all the frost is gone.
To tell if you have a DCAM, under adequate lighting rotate the coin until the fields appear black. At this point if the devices appear pure white, you probably have a DCAM. If the devices are a bit grayish, it's probably CAM.