Parker 51 Flighter.

[jchch1950]

How many versions of the Parker 51 with steel barrel and cap were made?

[FarmBoy]

One with a gold cap band and a late version without. 

[jchch1950]

Thank you for the answer. 

[FlighterGuy]

Actually, four.  There is the 4Q49 Mark I Type I 38mm clip, then the early 50s Mark I Type II w/ gold band 40 mm clip, then the late 50s Mark I Type II w/o gold band 38 mm clip, and the 51 Special (Chrome trim)

[joss]

56 minutes ago, FlighterGuy said:

Actually, four.  There is the 4Q49 Mark I Type I 38mm clip, then the early 50s Mark I Type II w/ gold band 40 mm clip, then the late 50s Mark I Type II w/o gold band 38 mm clip, and the 51 Special (Chrome trim)

 

One could easily produce a home made"51 Special Flighter" from different P51 parts but was such a pen ever in the Parker catalog?

[FlighterGuy]

The 51 Flighter barrels are just a tad loose in the 51 Special cap and too tight the other way around.  And the barrel is just a fraction of a mm shorter than a standard 51 Fighter barrel.