Very cool Parker / Phinney Walker

A very neat desk set that came complete with a Parker Challenger (undated) and has the very sexy Phinney Walker 30hr clock with pullcord winding. The mount is made from red oak that has retained a lovely warm brown tone. It sports the original green baize felt bottom. The pen has 14k Parker nib, button filler, and has been fully restored.
The Phinney Walker clock some may recognize as an automobile clock, though the case is clearly original and designed for this deskset. I've had the clock professionally restored and now it keeps perfect time. The photo may not show it, but the clock is without any noticeble wear or damage...Another treasured junkshop find.
If anyone has any info on similar desksets, I'd appreciate it as I've been unable to pin down the year or even the maker.