What is the antacedent of the pronoun those?

Often, the antecedent for the demonstrative pronoun those (also, this, that and these) is not used because the speaker is physically indicating in some way the people or things which are referred to as 'these'. Examples:

These are my favorite.

These will match your new coat.

Sometimes, the antecedent is in the sentence or in another sentence. Examples:

These are my favorite cookies.

They have a lot of nice gloves. These will match your new coat.

When a demonstrative pronoun is used just before the noun it's referring to, it is an adjective. Examples:

These cookies are my favorite.

These gloves will match your new coat.