Water Stain Texture
It is an imperfection texture of water stain. This type of water marks can be commonly found on the glass of a bathroom.

The SBSAR allows users to change the size and amount of the stains.
 
Cup Stain / Glass Stain / Water Stain
This texture is an imperfection. It is glass stain. When a glass of cold drink is put on a cloth, it will leave a water stain.

There are 6 variations which should be enough for scattering randomness.
Vintage Glass Texture with Classic Window Patterns
This texture has a very typical window patterns which can be found in a lot of old houses, so it is very suitable to be used as a vintage glass texture.

By applying the texture, the glass can immediately has 70s style.

It is semi-transparent texture.
 
Broken Glass Texture with Cracks
It is a broken glass with a lot of cracks running from the center. This kind of glass breaking pattern can be made by a sharp hit such as a bullet shot.

There are both circular cracks and radical cracks spreading out from the central point of fracture.

Since it is a transparent texture, an alpha map is also available.