Classic British Flight Sim

It's also a reasonable match for your version Mike.

The wheel hub had me immediately thinking of the USA (Southern states) so I trawled through lots of images of all sorts of biplanes. Mail plane came to mind but that undercarriage support strut arrangement is quite distinctive and I've not seen it in any images I've looked at to date (apart from yours that is).

Stolp Starduster ( with radial engine)

Ttfn

Pete

I'm going to go for a Franklin sport

Thanks Pete and Ben, but no winner yet.
Here's the back end, and I haven't painted out anything:

Okay, I've looked through possibly hundreds of bi-plane images and I still can't find that combination of undercarriage support and engine arrangement. I think I'm seeing double! I had thought I'd narrowed it down to a manufacturer (WACO) but that turned out to be only one aircraft (the slender wing) and all the rest of it was wrong. I think I give up!

I DID dig deep to find that obscure beastie.
Thanks to all that tried.
From the book:
The Meyers OTW Aircraft Company was based in Tecumseh, Michigan, to build Allen Meyers' design for a two seat military trainer.
102 were built between 1936 and 1944. 16 in current use.
Variants
OTW-125 125hp Warner Scarab radial;
OTW-145 145hp " " " :
OTW-160 160hp Kinner R5;
OTW-KR 120hp Ken-Royce 7G [only one built]
Here are the final 2 bits of the pullover. Now we can put that one to bed.

Look at this! I'm giving you all three views at once.

Ted Roberts Aerostar

I think it os a 1209A

Chris, that's not what the book says, though it does have similarities.
That Aerostar has wider, flat nacelles, and the gap between pax windows and cockpit is shorter.
George I knew I should have hidden that number!