An 18th century Russian silver two-handled soup tureen and cover

An 18th century Russian silver two-handled soup tureen and cover,

maker's mark IGR in a heart shaped punch, unidentified, assay master Andrey Titov, Moscow 1787,

circular form, fluted border, bifurcated angular scroll handles, domed fluted cover with a large finial, on a raised circular fluted foot, gilded interior, with an electroplated liner, height 38.5cm, width handle to handle 38cm, approx. weighable 107oz.