Alto II keyset connector plug identification

This place has the 2de19p connectors in their catalog. Kinda pricey though. https://www.onlinecomponents.com/keywordsearch.aspx?text=2de19p&pagenum… Sent from my iPhone On Aug 19, 2020, at 17:48, Ian Finder via cctalk <cctalk at classiccmp.org> wrote: ?It's actually an ITT CANON ***2DE19P***, not a DE19 as Marc indicates. On Wed, Aug 19, 2020 at 1:48 AM Curious Marc via cctalk < cctalk at classiccmp.org> wrote: We had the same problem. It?s a DE-19 connector, fits in the same envelope has a DB-9, but 3 rows instead of 2. You can see in this video right around here: https://youtu.be/GMp5EAq-Elo?t=541 . ITT-canon used to make these. You can look them up on eBay, which is where we found ours. Make sure you don?t get a two row DB-19, which is a completely different animal. Marc On Aug 18, 2020, at 8:15 PM, Steve Malikoff via cctalk < cctalk at classiccmp.org> wrote: ?Would anyone be able to identify the 19 pin connector used on the Alto II keyset? Shown in the second photo on https://www.computerhistory.org/collections/catalog/X124.82C The Xerox engineering doc (209962B_Alto_II_Assembly_Keyset.pdf) has it as P/N DE51218-1 if I interpret it correctly. I've looked for a while and the closest I can find appears to be Mouser p/n 2DEF19P The cost of 136 USD (each!) is more than I (and perhaps everyone else) would really like to pay, and that's only for the male end. Ideally I would like a datasheet on this original connector if possible, to know the pin-pin spacing and the pressed metal surround dimensions. I've just ordered small trial quantities of screws, microswitches, e-clips, nutserts, rods and so on for my keyset lookalikes/workalikes. Also about to start the key mapping to F5-F9 using a popular small SOC board, which is small enough to be inside a custom printed shell that the keyset plugs into. That is, the 3-row 19-pin female connector side which goes through to USB. I was thinking there's no reason it shouldn't be able to work using the original connector with a real keyset-less Alto, should any such animal be lurking out there. Hence looking at the feasibility of placing in a 19 pin male-female connector arrangement rather than the fallback of straight-through to USB. The whole thing is still at prototype stage so even if it doesn't work out, well I will at least have a bunch of additions to my nuts/bolts/fasteners/switches stash. Thanks for any help, Steve.