Any help dating or maker of this lovely small cream jug

Hi I have 2 of these small jugs, they appear very old lovely little pieces of art work, I am stuck to what maker they are made or the origin, I thought it was the number 18 painted in gold but it is more of a 1 and a little loop, also the number 38 that is faded and also other umber or letters either 5 6 5 or is it C G C I don't know but they ate lovely.
Any help would be appreciated thank you