I hope it's okay to ask help about Vintage JLC in here

Hi Guys,

I know this is the den of vintage Carrera but i'll ask for any help i can get.

So i found this vintage JLC ref number 119394 that i am very interested in. Before i'll start haggling the price, i thought i'll do some homework first.

Photo attached.

What do you guys think ?

My concerns are (in no particular order):
1. The crown and lugs shapes i think are okay. What bothers me is the case back. I looked at some vintage JLC before and this caseback is like nothing i've seen

2. The ref number. Usually its 1194...this one is 1193...

Considering those two however, i am not an expert of vintage watch at all let alone vintage JLC.

Oh by the way, the deal is watch only (without box and paper).

I suggest you ask here, Zaf Basha is a world leading expert on vintage JLC: http://www.jaegerlecoultreforum.com

Thanks so much ! i dont know where to look before you directed me. I'll try to ask him. Thanks once again.