Such seems your beauty still. Three winters cold ...

[kttlt]

In Shakespeare's sonnet 104 there are the following lines:

"...Such seems your beauty still. Three winters cold
Have from the forests shook three summers’ pride..."

Why is there no apostrophe after "winters" but there is one after "summers"? Shouldn't it be "Three winters' cold"?

 

[emsr2d2]

The lack of apostrophe is correct. "Three summers' pride" means "The pride of three summers", but, here, "Three winters cold" is a poetic way of saying "Three cold winters".

Three cold winters have shaken (removed/destroyed) the pride of three summers from the forest.