Help identify Mid century dining table and chairs  

I believe the chairs are Stanley, although I've not seen them before with black feet. Are those integral with the chair leg, or a rubber shoe put on by an owner.
You could try searching Stanley dining tables to see if yours matches any.

Thank you. I believe you are correct. I can't tell if the black rubber feet are original or not but perhaps not as on one chair only 2 of the rubber feet are a slightly different size. I found the links below that appear to be the same table (the link with the table has a mix and match chair set) and the chairs from another site. Thoughts?
https://www.pinterest.com/pin/320107485994094654/
https://furnishmevintage.com/store/4-mid-century-modern-hvidt-style-dini...

Although my leaf has a decorative split in the middle and I can't find that in any images.

If the feet are rubber, they are not original. As there were not any close-up photos of the feet, I wasn't sure if the black was original paint or rubber feet added afterwards.

Is the leaf with a "decorative split" actually a butterfly leaf pinned together and with the rest of the mechanism removed?

The leaf is a butterfly leaf and connected in middle with screws. The leaf rests under the table when not in use.

Hi, I just purchased an almost identical piece with 387 on the bottom also. Mine came with three leaves. The butterfly leaf and to more slide ins. Is there a mechanism to pull your table apart? If so what type? Could you post a pic of your table legs. I am curious as to my table brand. I purchased what appeared to be the matching buffet and it does have the Stanley stamp. The table does not. The only reason I'm doubting the table is a Stanley is they were known for producing strong steady legs and pieces. I just don't get that feeling with the table. I could be wrong. I'm def interested if you find any more info on our 387 tables. (just saw the pin mechanism in your pics it looks like my table is the same as yours)