Milk glass hobnail oil lamp with chimney

This milk glass oil lamp is diagonally lined with partnering hobnail pattern on the base.  It’s chimney is frosted glass on its bulb then tapers to clear to the top.  There’s a few line cracks but not sure it was done in production, they definitely do not go through to the inner part of the base so it’s function can still be used without leaking.  It’s just under 8 inches tall and is 2-5/8 inch wide.  The red plastic may have been original for the metal holder that screws in to base to hold up the wick and chimney, unsure on that too. It weighs 210 grams or .46287075 pounds.