Beautiful certificate of bloodline (ger. Abstammungsnachweis, or Ariernachweis) issued by the Racial Studies Department of NSDAP in Vienna. 
Certficate determines one of 4 groups individual can be classified as:
- Aryan (deutchblutig (arisch)), 
- Mixed of 1st or 2nd grade (Mischling),
- or Jew (Jude)
Othe reverse contains data of ancestors which was used to determine classification - all 4 grandparents, parents and the individual. 
Stamped and signed by Ancestry Office clerk and verified with another stamp by Gauleitung in Vienna. 
Certificate comes blank, or filled out on a period German typewriter (see the footnote).
 
For partially filled out version (only front-side) please provide: 
Basic data of the individual in question:
name (for woman also maiden),
exact address and
marital status.
Classification (aryan, mixed 1st or 2nd grade, Jew)
Issue date and document number (I can made them up)
 
For completely filled out version please provide (a lot of data!):
For the individual in question: name (for woman also maiden), profession, birth date and place, date and place of baptism, religion. If married, name and religion of spouse, place and date of marriage
Classification (aryan, mixed 1st or 2nd grade, Jew)
Issue date and document number (I can made them up)
For all 4 grandparents:
names (maiden for grandma),
birth date and place,
religion at birth, wedding and (if applicable) death,
date and place of marriage
Same data for parents (religion just once though)
 
Please send the above data to krausepapierwerke@gmail.com. I know it's a lot of data, but remember you can correct your typoes, while I can't ;-)
 
* How is it filled out? It's a horizontal A4 document not fitting in most of the typewriters that survived. Luckily Krause owns one A3 Wanderer-Werke Continental typewriter from 1938 that can cope with the challenge!