Silver Surfer - I have no idea?

[backyardgardener]

Ok, someone posted this in Facebook and I don't know what's it is called.

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[Silver surfer]

Hi backyardgardener.

The pic is the size of a postage stamp.
Can you get a full size image.
A close up of the flowers would help.
It could be a Philadelphus ....but.....

Correction. Got it full screen!
Still need to see close up of the flowers!

[backyardgardener]

Added a photo above

[Silver surfer]

Thank you for the larger pic.
Still cannot be positive, as I cannot see the leaves.
To me it looks like a Spiraea sp.
Can you ask for a good pic of the leaves and I will see if I can id which sp it is.
Cheers
SS