[GreenKeys] BRPE front cover window

[Jones, Douglas W]

Early production Teletype BRPE punches had a window over the mechanism so you could see the eccentric doing its thing.  Late production punches omitted this.

I have 2 BRPEs, one that has been mined for spare parts, so I have a spare cover.  Both covers are late production, which is to say windowless.

Has anyone got an early BRPE with a window.  The parts list identifies the window as
     142989    Window, Plastic

I suspect it's just a chunk of plexiglass, and I'd be really tempted to cut a hole in my spare punch cover and mount a piece of plexiglass there because a window would make the machine a bit more interesting during demos.

But, before imagining doing that, I'd need to know what holds the window in place.  I have no clue about that.  If someone has a BRPE with a window, I'd really like to have some detailed photos, both a dead-on front view of the cover with a ruler in the photo, and a rear view of the inside of the cover detailing the mounting.

Does anyone have a BRPE with a window, or know of a museum with a BRPE with a window?

           Doug Jones
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