My dad got this milk bottle from his friend who bought a house with 2 of these in the attic. I cannot find anything about it took it to a bottle show last weekend. All the milk guys were drooling over it and wanted to buy it not looking to sell it but would love to know it’s value and about it. I know it is pre 1900s . It appears to be blown in a mold with a applied tooled top. Embossing on front reads Filston Farm EST. By Registered Edward Austen. It is also embossed on the bottom Thatcher manufacturing company Pat. Sept 17th 1889. I know the Farm was in Glenco Maryland. Any help would be great the people at the bottle show really like that set it could be worth $200 to $300 but they weren’t sure. One guy has collected milks his whole life and said he never has seen it and it my be one of the first milks. Any help would be appreciated.