[Malysh]

Actually, you won't find a 32 Colt N.P. Colt D frame with the heavy barrel/ejector rod shroud . As of 1972 and later the heavier barrel were 38 Special DSs, Cobras, & Agents only.

As Colt75 mentioned, these were parts clean up guns, and ultimately, the last run of them made. Some came the larger wood stocks (combat?) some came like durjon's

 

[Malysh]

I see 3 different 32 DS's with 3 different types of stocks. Colt must have used what ever was available at the time of assembly.

Exactly. Most manufacturers will do the same thing, it's part of cost accounting!