Marriage Certificate questions

I just wanted to make sure I'm on the right track. I've attached a Certified Marriage License I received from my mother, and as I reviewed it I can see a few things right off.

First, it appears to be an extraction of the original, since the original was handwritten by the parties to the marriage and you can see the "Signature" lines are typed. It appears the extraction was pretty close to the original, as the font looks like classic IBM Selectric, and since you can see the first letters of many of the Capitalized words are higher than the rest of the words, leading me to sumise it was manually typed prior to our modern technical age. The extraction has also introduced some errors (the first witness' and Officiant's last names are incorrect.)

Second, it's apparently a Short Form, since you can see at the very bottom the phrase "Confidential Information" is cut off midway, indicating that additonal information was obscured on this certificate.

Finally, the Register of Deeds has apparently, at a later date, covered Social Security Numbers with a tag that says "Suppressed by Register of Deeds".

My feeling is that I'd go with the following as the First Reference Note (remembering my previous post about considering Vital Records in Wisconsin as County records, even though they are titled State Records since they are recorded, filed, and maintained in County Register offices with only copies sent to State):

Douglas County, Wisconsin, marriage certificate (short form), no. 28-200 (1968), Leonard-Jewell; Douglas County Register of Deeds, Superior.

But, that raises a few questions:

1. 9.30 talks about identifying  certificates as created at the time vs. modern extraction, but I don't see any examples of how you'd note an extraction in subsequent examples. Do I need to identify this as an extraction, and if so how do I do that?
2. Would this be considered an extraction, or a derivative record (9.1), or neither?
3. Do I need to note that the Register of Deeds has altered the "original" record by tagging over the SSN's? If so, how would I do that?

Thanks for your help!

Rick