"Not sure what you mean about plastic tips, there are some felt pads we put under the legs to protect the floors.
No plastic on this table!!! "
Back to the 19th century....
Seriously, many folks in the 20th century, in order to make their older furniture look "modern," removed the casters and replaced them with metal or plastic tips. A common practice, no big deal, and fairly easy to remedy if necessary.
Glad to hear nobody did that to your table. I'll stick with my 2nd half of the 19th century, $300 to maybe $500 guesstimate.