Thanks Sav22 I found it. 185xx don't know if that will help find the manufacture date or not.

The action is going to need some serious cleaning as the oil that was on it has turned into crud. It is very hard to get the bolt fully forward, it goes but takes more force than I would expect. Looking at the bolt it looks like a single firing pin but with the crud on the bolt face it may be that I'm just not seeing it.