While I am not an expert nor an antique deal several things immediately scream "no" to me. The shipping is cheap; no dealer worth her salt will ship a genuine vintage vase or antique using free USPS ground, a near guarantee of breakage for a vase. Second, the condition shows "used"; while I realize that is an eBay designation meaning "may be a floor model or store return that has been used. I'd be very suspicious of the 1850-1890 date range. A century plus later, maybe.

If you like it go for it. But it's probably mass manufactured in either the late twenitieth ceutury or the early twenty-first century. Did you search Google Images?

At $4, if you like it, it's worth it. A lot of fine china that used to be worth a fair amount is hard to sell these days. I assume if anyone could get $50 for that, they would have.

It is probably so cheap because it is missing its lid. You can see in the other pictures that it has a ridge where the lid sits. All chocolate pots would have lids.The
Mark on the bottom and the bottom itself do look old.

It is $4 who cares why are you asking do you collect chocolate pots ? It seems it has a reserve so what was it ?

It's an auction, so $4.25 may not be the final price. The bottom does show some age, but with the lid missing I wouldn't expect it to bring a high price.

Info about the maker’s mark here: I E & C Hand Painted mark