And indeed, the H2007 key from eBay works perfectly! Thanks a lot for the link. I also have two kinds of 21 MX's, one with the double sided on/off H2007 key, and one with a regular HP 1000 key and front panel arrangement. That key opens the front panel. However, the second 21MX actually says "21 MX E-series" on the front panel, still with the old 21MX blue color lines on the panel. So I believe it's an early HP 1000E before the "1000" rebranding. Then the 21 MX became 1000M, and my 21 MX E-series became an HP 1000E. Marc
-----Original Message----- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of jim stephens via cctalk Sent: Monday, September 25, 2017 6:03 PM To: cctalk@classiccmp.org Subject: Re: HP 2108A key The 2007 can be bought on ebay. It also is the Microdata 1600, Reality and other standard key. I carry one on my keyring just for nostalgia, and also if I run across a 1600. FWIW it also will open most Pepsi and Coke dispensers in such as McDonalds, as well as quite a few devices in Phoenix Sky Harbor air port. Latter is not recommended now with TSA around. Supplying an example ebay auction: H2007-2007-Key-Precut-Chicago-Lock-Illinois-NEW-FACTORY-CUT-SHIPS-FAST http://www.ebay.com/itm/322652408202 I lucked out and have filing cabinet cores, upright cabinet key cores, and stand alone switches, all on the same key. When you fool with something for 40 years, things like this shows up. Thanks jim
