Core Memory ID

I was looking around my box of old boards and found a core memory set I've had since about '84. It was a leftover from an old system that had been surplussed. I think the system was a PDP-8 of some sort, but I don't know for sure. The memory set consists of a SENSE board and an INHIBIT board connected to the sandwich layer of five board containing th core. There is a label with the following: EM electronic memories a division of electronic memories & magnetics corporation 4KX12 CORE MEMORY STACK 270321 47071MW P/N 906819-A04 S/N xxxxx C/N TS906819A D/C 5272 There is an actual serial number, but the first digit is torn. The plastic strain relief strips and the card edge handles both have "DIGITAL EQUIPMENT CORPORATION" and "MAYNARD, MASSACHUSETTS" on them. The handles also has "W025" on them. Is this a PDP-8 board, and was it an OEM part supplied to DEC or from DEC? -- Eric Dittman dittman(a)dittman.net