18k. four sapphires? four diamonds
WOW Very nice. If it is 18K the diamonds and saphires will be real. If you need parts for it I have a few for the 5AP.
JP
Is there anything else stamped inside the back case?
Any Bulova markings on the case itself or is it only on the movement?
Hi Savannah, welcome to myBulova. This is a beautiful watch. I've looked through all the advertisements we have on sight but do not find anything that matches it. I'm afraid we'll have to label it Unknown until we find an ID for it.
ad dated 1927 http://www.mybulova.com/sites/default/files/uploaded_photos/user2196/0001_18.jpg
Several traits of the low resolution ad are there including but not limited to the Case composition, Jewel count and mention of the Gems.

beautiful piece.
'PANDORA'
I can see the 18K stamped inside, but shouldn't it also have a AS or Bulova marking?
I wouldn't go as far to call it the Pandora, the dial is different and the ad is very unclear to make a ID.
Nice looking watch, but Unknown for now.
Id sure like to see or know everything stampled on teh inside of the case back. Contract case possibly?
an early solid Gold Case which We have seen before sans any Bulova markings inside the back.
When the original image of the Watch is corrected for Camera angle distortion and superimposed over the advertisement We have a match, particularly evident on the Left side of the image.

The Dial appears the same except the elongated 12 and 6 numerals of the actual Watch which can be contributed to Artists rendition issues with the ad (these old ads were formed from drawings which were then transferred to a printing block).
'PANDORA'
Maybe there's a higher resolution version of this ad? I sure can't read the text in the ad Fifth linked above (inserted below) . Based on date of watch 1926 (from movement) and 1927 ad, it sure looks similar it to Pandora., If I could read the text about the Case composition, Jewel count and mention of the Gems, I'd be good with TENTATIVE PANDORA. If someone else can make out the text, I'll take their word for it.

Thanks Mark, now I tend to agree with you. Advert looks to state 18K solid gold with a 15 jewel movement. We have seen a number of the solid case models lack the typical Bulova markings.
Pandora it is for me.
Here is a slightly better look at 'PANDORA'

(how'd this one get by?)
Vintage database ad Dated October 1926 http://www.mybulova.com/sites/default/files/vintage_ads/1926-Bulova-AD-16-October-Low.jpg