Overall condition 8/10 lens and rangefinder are clean, only some small marks on camera body, comes with 6 months warranty.

Mamiya 7 + 150mm : Body Serial Number : PK1155, Lens Serial Number : SF1316

Mamiya 7ii + 65mm + 80mm  : Body Serial Number : BA1088 , Lens Serial Number 65mm : DI1003 , 85mm : BA1030 

Review: 

"The Mamiya 7 is the world's best camera.

If I only could have one camera for everything I do, it would be the Mamiya 7 and the 43mm, 80mm and 150mm lenses."  review by kenrockwell.com.

"Mamiya 7, legends has it that if you ever only need one medium format film camera the fight out would be either the Hasselblad, Rolleiflex or ... the Mamiya 7. Having shot all three camera before, I reckon the Mamiya 7 is probably the most 'shoulder friendly camera' the weight of a Mamiya 7 with a lens (1.2 kg) is only a fraction of a Hassy (2.2 kg) or a Rollei, yet with it's versatile option of 'long nose' lenses you can shoot almost anything with this beautify as maximum quality. After all maximum quality is what we are looking for in medium format aren't we?"  my 2 cents from Gary Wong of FilmNeverDie.

Mamiya 7 v Mamiya 7ii

Mamiya:

"The Mamiya 7 II offers double exposure capability and choice of black or champagne finish with a restyling over the original Mamiya 7 model. It uses all Mamiya 7 lenses including the latest 50mm f/4.5 superwide lens with optical finder and 210mm f/8 with optical finder."

Ken Rockwell:

"VERSION I vs. VERSION II

There are three versions of this camera:

1.) The original one in titanium finish (shown above) that I use.

2.) The current -II version painted to look a nasty chrome ("Champagne")

3.) The current -II version in black.

They are all mostly plastic and just painted the various colors.

There are negligible differences between them. The rangefinder flaws affect all versions from what I've seen.

The "improvements" in the rangefinder in the II version are a change in color, apparently not reliability, stability or accuracy.

The II version adds multiple exposure capability and replaces the simple lens-changing curtain control on the original Mamiya 7 with a more complex fold-out lever.

The II version adds an extra neck strap lug. Mamiya can retrofit this to the original Mamiya 7 if you want.

All in all, they are the same cameras." by Ken Rockwell quote from Photo.net

Descriptions:

Specifications:

References:

https://kenrockwell.com/mamiya/7.htm

http://www.mamiyaleaf.com/legacy_mamiya7_ii.asp

https://www.photo.net/discuss/threads/differences-between-the-mamiya-7-and-7-ii.239790/

Sample photos:

1-2) @gongtairoop

3-7) @gary7wong

8) @princesscreepo