Christofle fish knives - ID help please

Hi everyone, I hope someone can help with dating some fish knives I have please. I inherited them from my grandmother and I suspect they’re 1930s? They are marked Christofle and have the scales mark which I think has a C C and a bee. I have attached the best pictures I can get which really aren’t that great – sorry! I have read there should be another mark showing silver content or numbers in the other mark but there’s nothing (I’ve assumed they’re silver plate). I have also checked out loads of websites but I can’t find this pattern anywhere – does anyone recognise it? Thanks in advance for your help!

 

Model Chevron

 

Thank you so much for identifying them for me.

 

Just a quick follow up - now I now what they are I have read that they were designed in the 1930s by Luc Lanel and I was wondering if that was correct? Much as I love them I may decide to sell them and I'm not sure if they are valuable (or more likely not!)? Any more info would be great. Thank you!