Ithaca 37 identification

[DN308]

Hello everybody,

I just received an Ithaca 37 but I need to identify it. If someone can help me?

#S177xx inverted on the barrel
P stamp on both barrel and receiver
US stamp on the right side of the receiver

Thanks in advance

http://i1003.photobucket.com/albums/af160/Album-MolonLabe/B415E5D8-DFD4-4555-B18B-20DBAF5326D6-4526-0000042B12177210_zps7c580d7c.jpg

http://i1003.photobucket.com/albums/af160/Album-MolonLabe/A943E1A2-D13B-49EE-A34D-E783283818A4-4474-00000650B5EFB044_zpsa76e062d.jpg

http://i1003.photobucket.com/albums/af160/Album-MolonLabe/A994E784-4CFB-4068-AF85-19FAE2DB817C-4997-000006A9996EA8AB_zpsf1f98235.jpg

[scosgt]

That is a real VietNam era military trench gun GREAT find.

[Tom Doniphon]

Does the receiver have a matching serial number?

[DN308]

#952xxx

[scosgt]

Is that the one that was on Armslist?

[DN308]

Nope
I don't know what Armslist is

[DN308]

Someone have an idea of the value of this beauty?
I don't want to sell it, just want to know