I just wanted some advice really, last October we lost our beloved cat Louis after he went out for a stroll and didnt come back

However yesterday I couldn't get Louis out of my mind so before i went to bed i had another online search for any cats that had been found in Iver ( where we lived when Louis went missing) where to my suprise on pets located i stumble across an advert for a found cat in Iver with a striking resemblace to Louis! advertising a medium haired black cat, roughly 2 years old,Male, neutered,not chipped(our biggest mistake) great with kids, very affectionate. All of which sounds like Louis! my fiancee is off to see the lady whos been caring for him tonight to see if its him, but how will we know its him for sure? I'ts been 9 months since we last saw him, he's very thin,his coat isnt at its best and he has sustained injurys to his tail, im so worried we may not recognise him when it is him, or think its him when it isnt. He is a fully black cat with the odd white hair in his coat, he has no really distiguishing marks he was just a longish haired black cat. Does anyone have any advice or experiences they can share that may help? He possibly wont even remember his name

( i cant go with my fiancee to ID the cat as i have to stay with my dughter who would find it too upsetting if it wasnt him)