It is a Type 99. To restore it you would require a stock set, middle barrel band, front barrel band and that would be it for the most basic restoration. However I believe it is cheaper just to buy the full rifle in the States than to restore one. It was made by Nagoya, and I couldn't see the series number, however if you just want to get it shooting, 7.7x58 brass is available now (or you can buy 30-06 brass and trim and resize), and it just uses a .311 bullet (like a Lee Enfield, or Argentineicon Mauser).

They are nice little rifles, and tend to be very accurate (plus the bores generally are in great shape thanks to chromelining). I did a restoration of a Type 99 once however I don't think I would do it again.