CompacTapes

Over the weekend, in anticipation of getting a TK50Z-FA, I picked up several "CompacTape" cartridges. They are all still sealed, and dated late 1991. The label on each cartridge carries a logo for PowerMon II which is 'Automatic UPS Monitoring and Shutdown Software'. However, the printed text on the labels is rather more provocative. They say things like: OpenVMS/VAX/AXP Ver. 2.2 S/N: 9615894 ST-1013-03-F1 VAX VMS Ver. 3.0 S/N: 9421376 DEC ULTRIX S/N: ULT 294 Any idea what I have here - other than potential scratch tapes? It seems most likely that the PowerMon software is on each, but the disparity of serial numbers would seem to me to make it unlikely that the monitor program is all that is there. S'pose they are bootable? Comments and speculation appreciated. - don