LOST!!! White and Gray Cat! LOST!!! (mill valley)

KIRBY IS STILL MISSING! Large grey and white fluffy cat, 12 years old and male.
Possibly wearing a blue collar.
Reward for any information leading to his recovery.
His name is Kirby Sinclair and he went missing in Mill Valley near Hauke Park.
Do you have any information about him? Did someone pick him up, thinking he was lost? Please, please help us get him home! This kitty cat is so loved and we are worried sick.