[TR] 1958 Works Monte Carlo Rally TR3A Valve Cover Info?

[don.hiscock at gmail.com (Don Hiscock)]

JD Classics in the UK is advertising for sale an apple green works
TR3A (restored) reportedly prepared for the 1958 Rallye Monte Carlo.  Here's a
link:

http://www.jdclassics.co.uk/car/407

I don't think I've seen this particular valve cover before.  Anything
the collective wisdom of the list could tell about it would be appreciated.
And are the leather bonnet straps original equipment to the rally cars
from this period?

Don
TR3B TSF202L