Five photos, some enlarged to show detail.
Frenulum of a uncircumcised penis, removed by circumcision
Frenulum of a uncircumcised penis, removed by circumcision
Photos:
www.circumstitions.com/Restric/comparison.html
www.circumstitions.com/Restric/Botched3sc.html

Below is the most beautiful photo of an intact frenulum I've
found on the internet.  It was copyright free.
>
Intact
Frenulum
No
Frenulum

No Frenulum
Uncircumcised
Circumcised
Circumcised
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Intact
Frenulum
Uncircumcised