Safari 1.24 and Safari 1.3 coexist

Before I updated to OS 10.3.9, I duplicated Safari, and I renamed the
duplicated one as Safari 1.2.4.

After I updated to 10.3.9, I found that duplicated one became 1.3, so I
renamed them properly.
I got one called "Safari 1.2.4", the other "Safari 1.3".

Then, I checked both user agent.
Safari 1.24 : Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en)
AppleWebKit/312.1 (KHTML, like Gecko) Safari/125.12
Safari 1.3 : Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en)
AppleWebKit/312.1 (KHTML, like Gecko) Safari/312

I am wondering that Safari 1.24 is really 1.2.4 or not.