Thanks What Cheer,
I searched for "Frank Pugliese" and saw a reference to a left-handed Mauser conversion made by him.

Here are pictures of the bolts



On the right is a standard '03 bolt, the middle bolt is a Sedgley LH '03 bolt lengthened at
rear and on the left is Hoffman gear LH bolt.



On the right is Sedgley 1917 bolt shortened in the middle for use in '03 action, the middle bolt is std 1917 bolt and bolt on the left is from the unmarked sporter, it is a 1917 bolt shortened at rear
for LH conv.