Late 1800s | Antique | Set of 4 plates Porcelaine Royale Pitcairns "Mostyn"

In excellent condition for their age The plates have microcracks in them due to ageing One of the plate has a brown mark (line) about 2.5" as per photo One of the plates has a few blue dots on it as per photo One of the plate as 2 chips in the back as per photo As per my researches, plates are from late 1800 to early 1900. I could be wrong, please do your own research if you'd like to purchase these plates. Smoke free home Please comment for more info!