currently listed is a NOS 11630 GMT, however, I have to wonder I've never seen this model before? my intention is not to cause the seller any damage but I'm really curious I absolutely never seen this variation before, in fact i was expectingt the rare grey subdial that were used by the last autavia GMT variant from the 80s, I recall these used 11063v style cases but were stamped 11630 with no serial? thus an interesting breed.