Ok Best I can tell I have a pre model 14

the info on the yoke is Production markings

The Serial Number on the barrel, cylinder and frame read "K 237423"

it is a hand ejector

.38 special

6 inch barrel

Adjustable Post war sights

5 screw

I am looking for help getting a general manufacture date

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Your serial number falls about in the middle of production year 1955.

Others will be along who can pin it down even closer.

K 237423
K231,256 – K266,154...1955 (manufacture)
The closest SN to yours on my list is K2397xx which shipped in 1/56.