My NIB condition 19-3 Nickel 9K44XXX with cousin 66-2 AFY1XXX. The 66 has TH,TT, RR, WO and a trigger stop from the factory.
The 2 1/2 inch guns a 19-5 in blue with 66-4 in high polish 'pimp' stainless.
19-3 6 inch with factory full target treatment. Shipped in 1971 2K36XXX
Now, all I need is to find a 6 inch 66 like the one I had then sold in my early 20's!