Lot of 9 vintage books Perry Rhodan Series books. See below for specific info. Unless otherwise noted, they are from the 1970s, were published by Ace and are in generally good condition with signs of wear and aging.  The pages feel and look old, as expected.  Many say "First Ace Printing". The far right one in photo is ex-library and has markings. 

These will ship by USPS media mail.

The books:

11 - Planet of the Dying Sun- by Mahr - back cover shows some wear (Orbit)

13 - Immortal Unknown - by Scheer (Ace)

14 - Venus in Danger  - by Mahr - slight cant to spine (Ace)

16 - Secret Barrier X - by Shols - small chip on back cover (Ace)

29 - A World Gone Mad - by Darlton - bottom left corner wrinkle (Ace)

37 - Epidemic Center: Aralon - by Darlton (Ace)

43 - Life Hunt - by Brand (Ace)

44 - Pseudo One - by Darlton - bottom right corner wrinkle, spine wrinkle (Ace)

No # - In the Center of the Galaxy - Darlton - ex-library with markings, worn more than the others, spine canted and creased (Ace)