These images below can help you identify which 'key way' you are using at your home. (Your home or business might have locks with both types of keys)
Below are some lock faces to help determine which keys and lock types you might have.
Kwikset brand lock face
Kwikset - 'Smart Lock'
(note: slot to left)
Schlage brand lock face
Below are common finishes (or colors) for locks. We do not carry them all, these are examples. The most popular are polished brass, satin nickel and antique brass, all of which we do carry.
The image above is from a Kwikset brand catalog.