First, I am not really educated on what makes certain carbines more valuable that others.
I do know that the more original (correct parts from the original manufacturer from the right time period) the more it will be worth.
I think that safety is from a rebuild at an arsenal, (again, I am not positive) which makes me think that other parts are not original (as it originally came from the manufacturer I mean).
The barrel is an Inland, is that who made the receiver? Inland made the most, so if it is an Inland, it will be worth less than a Saginaw (all other things being equal.) What does the bore look like? Is it there more pitting under the wood? These things will all have an impact on the value.
I personally would think that the chrome would detract from the value. I also think that the condition of the rest of the metal would detract from the value as well.
If I were you, I would post that here:
http://www.thecmp.org/forums/forumdisplay.php?f=6. It's a link the the CMP forums, and some of the guys that "hang out" there have forgotten more about Garands, 1903's, and Carbines than I will ever learn. This thread may also help you:
http://parallaxscurioandrelicfirearmsforums.yuku.com/topic/24460/t/m1-carbine-date.html There is a chart on it that has the "born on" dates. (I can't clearly read the manufacturer, or the SN, but I'm sure you can.)
For my guess on it's worth, I would guess maybe $600. The CMP is selling rack grade Inlands for $419, for whatever thats worth, but they are obviously not chromed.
It is definitely cool though, so if you are happy with it, then that's all that matters.
Let us know how it shoots when you get it cleaned up.