Victorian miniature glass vases with applied machine threading

I scored these charming pieces of Victorian art glass at last weekend's monthly antiques fair.
Small, cute...& cheap to boot! :-)
They are both made from clear glass with very fine applied machine threading in ruby (looks pink though).
The crocus shaped vase measures 10 cm tall, 4 cm across the top rim, & 5.3 cm across the footed base.
The shell vase measures 7 cm in length, 4.5 cm across the cut & polished opening, & 5 cm tall.
Both in perfect condition with no chips or losses to the threading.
Most likely of English manufacture, circa 1880s. Could be Richardson's, Stuart, or Stevens & Williams, etc.