Zedekiah - If all the bottles have the gold closure then I'd be VERY careful about drinking it as NO Ambassador was **** with that closure, that closure is from a modern [since the 1960/70's] pottery jug . If you look at the neck you can see where the foil capsule originally was which should have sealed a white [sometimes gold] plastic ribbed cap, or in early bottles a cork.
The label is one that was used from the late 30's through to the mid/late 50's when the label chaged markedly.
There are only 2 ways to date these bottles, first check the side of the label and see if there are some small straight cuts. These ar the date codes but you need a special card reader [old fashioned - it was either a flat cardboard or plastic card] and I'm told that none still exist at the company. The other way is that sometimes they date stamped the back of the front label so shine a light see through the bottle and check.