Is it wrong to omit the article?

[davidtrinh]

The words, limited edition, are a noun. Usually, you need an article for it. For example,

(1) This gold watch is a limited edition.

(2) This gold watch is limited-edition.

I discussed this with my non-native English speaking friends. They have different opinions about it. Some said that the article is needed and others did not agree. I am not sure who is right.

Is it OK to use it as a compound adjective as in (2) when the article is omit?

Please answer my question. Thank you very much for your help.

[Alan]

Although both forms may well be in use, the first is the more standard.