I was struck by the Novus Ordo today, the so-called "Prayer over the gifts". It is, in the 2002MR, a reworking of a prayer in the 1962MR, in its own turn from the ancient Gelasian and Hadrianum and Paduense Sacramentaries.
SUPER OBLATA (2002MR):
Praesenti sacrificio, quaesumus, Domine,
observantiam nostram sanctifica,
ut, quod quadragesimalis exercitatio profitetur exterius,
interius operetur effectu.
This is a reworked version of a prayer in the 1962MR on Ember Saturday in Lent, in the 1st Week:
SECRET (1962MR):
Praesentibus sacrificiis, quaesumus, Domine,
ieiunia nostra sanctifica:
ut, quod observantia nostra profitetur extrinsecus,
interius operetur.
Perhaps some of you will take a crack at these and determine what the differences are.
