Haha I just did the same thing today. It's 16mm for sure - and I just bought it! So I'm good for now. Thanks to Steve for pointing out that link to me!!
Hi All ! First of - just wanted to introduce myself. I'm a fairly new Enicar enthusiast (having focused on vintage Heuer primarily for the past several years) - and I must say, I'm becoming quickly obsessed!
I'm so encouraged there is such a vibrant community and a great forum site behind this...