Helbi is probably a brand you've never heard of. The brand was one of over ten brands under the Elida Watch Company based in Switzerland. Probably not a brand that ring in anyones ear either. But what's memorable is this lovely chronograph that probably came out around the 1960's or the 1970's.
 
This particular chronograph has a very clean dial with two oversize subdials known in the collector circle as "big eyes". Variations of this dial has been used by the likes of Gallet, Stowa, Sinn, and other brands. But the Helbi variant is  the rarest of them all. The lume patina is as even as you'd want it to be. A few superficial scratches on the bezel and a scratch near 40 indicates that the watch was probably used gently. The case, while there are scratches all around, is unpolished and in great shape. Perhaps one of the best features of the watch is the screw down crown. This gives this dive watch a little more protection around water. It's sad that in today's modern watches, no diver chronograph exist.
 
It's difficult to imagine that a watch brand can exist with only one or two chronographs in its library. Who knows, there could possibly be more but it's hard to say since we have no records to prove it. An indicator that this was made for the European market (possibly Swiss or French) is the text that mentions "17 rubis" instead of "17 jewels".