This is the only catalog shot I have of it, sorry its small and blurry. I have it listed as a 1979 catalog, the next year they used forks with integral handlebars not bolt on ones.
These bikes were made by Manco for sears, your tag indicates its the Sears 3hp standard minibike and the bigger full suspended one was the Deluxe. the 391 number is the manufacture number that sears used for manco products sold exclusively through them.
The bike itself was also sold as a yellow jacket and a Streaker, They May have used the yellow jacket name on the sears bike but I am not 100%' from what I gather yellow jacket was a name that Manco did in fact use, and may even be a company/brand that they acquired as they had karts under that name as well (never dug too far into it but there was a yellow jacket company at one time and manco was sucking up bikes etc from companies going out as they went through the years)
Hers is a shot of a yellow jacket I have saved that is fairly OG still (note the decal on the chainguard, plastic yellow front fender is still correct for it) it does appear to have the riveted on tag, but that was the best shot of the bike that was posted either for sale on in a thread years ago.
Here is a link to a thread of same bike sold as a Manco Streaker that I bought and messed with years ago:
manco streaker redo thread
It was truly 100% original when I bought it, just left to die right after it was bought brand new becuase the little girl fell on it and refused to ride it after that. but it has some close ups of the bike. They used an H30 3hp Tecumseh engine.