Reagent Bottles; Wheaton, TCW, W T Co UIA

Hello, I am new to collecting but I have a collection of what I believe are Reagent Bottles. I don't know if they are worth much if anything, and I don't know if they are recent reproductions either. If anyone reading this can help me out I would greatly appreciate it. If I could find a reference guide I can do the legwork. I have a collection of 13 bottles so far, all of the type in the attached photo, and three different sizes. I have 3 of what I believe are quart (or 1 Liter) size, 6 that are 1 pint (500 mL), and 4 that are 1/2 pint (250 mL). I am not entirely sure about any of this, but I love these bottles. I don't want to continue collecting if I discover these are bogus (recently made). Any help at all would be greatly appreciated.....especially how to research what I have. The bottoms of these have the following manufacturers on them. TCW....Wheaton.....W T Co UIA......MBW.


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