Comments below...

On 1/17/2021 7:41 PM, John Ruth wrote:
> Bill,
> 
> A close examination of those photos reveals a difference in the shape of the
wood-to-metal interface at the bottom of the tote.
> 
Haven't noticed that, I'll look at it more closely.

> You may have a different "type," although I sense that these Cowell & Chapman
plows are too rare for anyone to make a formal type study.

Agree...
> 
> Yours might be a prototype, or a patent model, which would explain the lack of
markings and the less-refined appearance of some parts.

Wishful thinkng on your part, me too!
> 
> Most likely, your assessment as a "repaired" tool with ersatz parts is
correct.

Not so much repaired as modified...
> 
> Whatever you have, FWIW, its body is not exactly the same as the Cowell &
Chapman shown in the David Stanley Auction.

Major differences I noted (Stanley auction and the other pictures) the 
hole for the depth stop has not been drilled, there is a bridge missing 
on mine where the depth stop goes and he sides of that opening are more 
tapered on mine.  Could be the same casting but modified somewhat for 
who-knows what reasons.
> 
> It's a very interesting piece. Making nicer parts will probably improve its
value in addition to its usefulness. Go for it!

I don't sell much so we will likely never know.  I'll post pictures if I 
get it made over.  Not likely to sell anything I put that much effort into.

> 
> John Ruth
> 
Regards,

Bill W.
Nottingham, PA
Woodworkers visit me at http://billwebber.galootcentral.com/