I have one, but it is sans label.
Nice mustang set! Never find one with the decal.
Okay, now I will come clean and Paul Harvey
the rest of the story...
Todd's is the only MUSTANG midget set that I have ever seen with a decal. I have always admired it, not only because it was the only one I had ever seen, but because it was friggin' cool looking. So, when I acquired this near-complete MUSTANG midget set -
without a decal, I decided I was going to make a decal for it myself, and I fully intended to copy Todd's.
But, in searching for a complete version of Todd's (it looks like it's cut off to me...), I couldn't find it. While he thinks I'm nuts, I'm not 100% convinced his decal came like that from New Britain factory. The horse looks like the Ford logo pony from the 1970’s to me, as does the font of the MUSTANG. Link to a Ford Mustang logo timeline
here. (As a Mustang guy with a nice one up on his lift, he may not be too disappointed in that if true!

) And remember, it's the only one anyone has ever seen, which is a little suspicious.
So I went searching for original New Britain Mustang Tools Trademark information at USPTO. That's where I found the logo I used on my set - and instantly fell in love with the upside down horseshoes M! And, it's the only trademark logo I can find, registered in 1954. Note, though, that I couldn't find that logo in any New Britain period advertising for Mustang tools, either.
Bottom line -
it's a reproduction decal for a trademark New Britain MUSTANG hand Tools logo that may not have been used, distressed in my preferred style to look "preserved".
I told Todd I was going to do this, because I wanted to use you guys as my test audience without skewing your opinions by telling you about it up front.