Here is a #12 - 5/8ths that I was fortunate to snatch up from Max right when he put it up, I think that it wouldn't have lasted very long, his workmanship speaks for itself, certainly looks second to none. Here's a link to the ad page on his site -
Vintage Straight Razors : Filarmonica - Doble Temple #12 : 5/8 : Full Hollow : Spain
Sweet. Here are some pics.