The barrels are different from the usual Parker 'Twist'
or Austin's 'Plain Twist'
and similar to Dave Miles' lifter, also refinished by Dale who had a difficult time obtaining contrast.
The barrels
may have been Parker produced. Any marks just forward of the flats?
See
http://docs.google.com/Doc?id=dfg2hmx7_1742r4n6vcz
Would it be possible to post a high resolution ultra close up of the barrels?