Vanguard Deluxe. Beautiful gun, what caliber? Just curious, I have same gun in 30-06. My serial number begins with a V.
Edit: Your's appears to be .06 as well. What is interesting to me is under the Vanguard yours is just Southgate California. There, mine says made in Japan and then has Southgate California engraved back where your safety is. Our safety's are also quite a bit different.