Three little Russian made transpo's, the two glass ones are BC3 / VSZ and the porcelain one is from a yet to bet determined manufacturer, it is incused on the "dome" with a T inside a circle and an indistinct date (1951?). The BC3 // 49 embossing on the flat-top is backwards.

The flat top inmsulator may be a CD 474.

[IFONA CD 586? U-586.2?]