Yes, The No. 1 and No. 7 are single end engineer wrenches.   The No. 1 is small and seems impossible to find.   Is that 7 available to purchase? PM if so.

Bumping.
Received a nice No.7 engineers wrench today.
So now down to 2 needed for the "Silent Salesman" Senior Board.
Oval logo wrenches wanted with below part numbers.
No.1, single head engineers wrench, top row left.
(As luck would have it..... Its the smallest on the board.)
I'm thinking it may not have the oval logo????
994 spark plug wrench, may not have oval logo only the "W in Diamond" logo.
thanks 4 any help.

Is this what you are looking for? 

https://www.ebay.com/itm/203824591693?hash=item2f74e4734d:g:m1IAAOSwTdRgbPeW

No, that one is a 503, very similar looking but only marked with a embossed "1".  Prolly will have that diamond w logo but not exactly sure about either.
Milled 1/2" for 1/4 USS nut. 4" long. Book shows 2 smaller than this.... I'm thankful I'm not looking for those.
Thank you.

Info from the book.
The No.1



Sparkplug wrench 994.