I have a large plum tree in my garden and would like to know the variety. It has green plums ripening to pale geen/gold just before they drop in early August. It is self fertile, when picked it leaves the stems on the tree and has medium size fruit. The plum is quite sweet with no bitter aftertaste. The closest I have seen on the internet is a Gloucestershire "****smock". However it isn't as "effective" as the ****smock.
Could anyone help in identifying this variety. Thank you