Nixie tube longevity?

[SeVeNeVeS]

Does anyone know how long a Nixie clock tube will actually last before burnout? (Roughly)

Thanks in advance for any opinions, searches say anything from 10-20 years and much less.

I appear to have purchased a basic clock (Don't ask  ), just wondering how long it will work.

IN-14 tubes were used if that helps.

[elShoggotho]

Nixie tubes dying is a when, not an if. You should think about getting replacement tubes, just in case.

Here's a set of replacement tubes from Ukraine. There are other, more expensive vendors, always selling a set of six.
http://www.ebay.co.uk/itm/252134799884

[RJBowman]

You tend to get just one digit burned out first, so if the five burns out, you know that it's five o'clock when the tube goes blank.

[SeVeNeVeS]

Hmmm... Just as I thought.

Cheers for the replies guys, will have to wait and see I suppose.

May buy a few tubes for the day and then try and find someone to replace them...........

Only time will tell