if memory serves

• if memory serves right

if memory serves

1. If I have correctly remembered the details.
   • 1954, The Accountant, volume 130, page xxxiii:

     But A. P. H. has told us how he has demonstrated, at least twice, that indeed a cheque need not be on paper. Once, if memory serves, he used a table napkin; on the other occasion it was the label of an almost empty wine bottle.

• as memory serves