I believe you have a Brunswick Manhattan carom table from between 1884 and 1888.
Here's the detail from the 1884 Brunswick Balke-Collender Co. catalog:
Brunswick "Manhattan" Billiard Table
- Year of Manufacture: 1884-1888
- Color Options: Oak, Ash
- Cushion Rubber: Monarch
The Manhattan is well adapted for private residences. In rich simplicity of design, in correct lines and proportion, and in the true artistic harmony and elegance. The Manhattan is peculiarly desirable. The style of finish is a combination of quarter-sawed oak and handsome figured burl ash. The Manhattan can, however, be made up in other woods as desired.
This table is furnished as carom or pool or both combined, and is supplied with the finest of Vermont slated bed from our own quarries, genuine imported Simonis cloth, the incomparable Monarch quick cushions and a first class outfit of everything complete. The legs of our tables, besides being joined with wooden dowels, as is customary, are fastened with a long iron bolt passing through the entire length of the leg to the top of the head block., thus inspiring positive solidity not otherwise obtainable. This is a very important feature.
Tables are supplied with our adjustable carom plugs with iron fastenings. The only perfect invention of its kind in the market.
I am not sure about it's value. Condition, and finding just the right buyer is everything.
It appears to be in great shape, but finding a buyer for a carom table might be a challenge. It may take some time. Get it listed on eBay, and all relevant Facebook groups (e.g. billiard collectors groups, antique pool table groups, etc.). Then it's just time.
Set up alerts on eBay for other similar antique Brunswick tables from that same period. Make notes on condition and selling price. That will help you figure out a value for yours.
Either way, it's a beautiful antique carom table by Brunswick. Thank you for sharing the photos.
Best of luck.