19thc BOSTON & SANDWICH? OIL LAMP Blue Font w/Alabaster Base

Offered for sale is this handsome Victorian oil lamp. I have not found this exact design in my references so any help with identification appreciated. My thought is the colors are consistent with Boston & Sandwich Glass Company. The font is bright blue contrasting with the alabaster or clambroth base. There is a faint Greek Key design on the base--very hard to see. The lamp measures 11" high to the collar and 5 7/8" across at the base. The bottom has an open pontil. The burner has a shade ring but no shade is included. This lamp is in very good estate condition with no damage or restoration noted. The only minor flaw found is a crack in the metal of the shade ring. This late nineteenth century oil lamp should be a fine choice for your collection! The cost of U.S. insured shipping and proper packing varies with your postal zone--see estimate above. If the estimate is high I'll immediately refund your account. Please check my other auctions this week for a few more outstanding oil lamps and perhaps save on combined shipping.