Looks like the type of plug a portable stereo (or the Burgess Safari Lite, for that matter) would use. You might have one lying around. If not, they are available on eBay. I have no clue if such other cords will actually fit, but if the pins line up at least, you could trim the plastic away so that the plug fits in.
http://www.ebay.com/itm/AC-POWER-CORD-CABLE-FOR-BOOMBOX-RADIO-CD-PLAYER-STEREO-RECEIVER-HD-HOME-THEATER-/321599390116?pt=US_Power_Cables_Connectors&hash=item4ae0d141a4http://www.ebay.com/itm/JVC-TYPE-POWER-CORD-USED-IN-TVs-STEREO-SYSTEMS-VCRs-AND-OTHER-ELECTRONIC-UNITS-/271176577263?pt=US_Audio_Cables_Adapters&hash=item3f236230efThe first shaver I used was a Remington from the 1970s or 80s. It seemed fine when I used it, but since switching to a regular razor, I'd never dream of going back to it, or any electric shaver.