Hey there bane! I'd like to give you a warm welcome to the forums. With a warm welcome in mind, I do need to kindly ask you to read the Bluelight user agreement and the forum guidelines prior to creating threads or posting in existing threads. Tisk, tisk bane, as you were supposed to already have done this.
I'm mentioning our policies, because, unfortunately, pill identification is not something that we do here. Part of being a "successful" drug user in these modern times, entails being able to conduct simple research on your drugs prior to experimenting with them. The medical community, your family, the cops, none of them are going to give it to you in a truly straight and/or objective manner. You have the entirety of the internet at your disposal and within half a second, literally, Google can tell you precisely what your pills are and whether they are timed or instant release. One of the reasons we don't do pill identification is because the research needed is of such an elementary nature, that we would be preventing you from developing into a competent researcher by helping you.
If your pills have no markings than they are almost certainly not legitimate. It's not common practice for pharmaceutical firms to manufacture narcotic pills that in fact, cannot be identified by anyone.
If there is no imprint, there is no way to tell you what they are unless you send them to a laboratory for diagnostic testing. I'm going to leave this open for a spell because you are new and I don't want to confuse you, but yea, no markings, no dice.