I'm a collector----only. My collection includes the K-38. My collection does not include model number guns (for the most part). So we've established I probably know what I'm talking about when it come to the value/future value of the K-38----and wouldn't know the 27-2 if it bit me on the nose.
I started out collecting these things many years ago because I was nuts for them----still am. As time passed, and the value of some/most of my collection began to increase---by leaps and bounds in some cases, it got my attention. These increases in value kept on----and got more of my attention. Now this matter of value appreciation has become a matter of primary focus. I lack only two guns (which I shall likely die without----no matter how long I live) to consider my collection complete. Accordingly, the only guns I buy now are those few which come along and are better than the one I already have. I sell the one I already have for WAY more than I paid for it (including the time value of the money I paid then)----and come out like a fat rat in a cheese factory.
My bottom line is you should buy the gun which offers the greatest opportunity for value appreciation. The fact you're going to shoot it is of no matter (unless brand new in the box) so long as you take care of it-------no news there.
Having established I know nothing of the 27-2, I nonetheless suspect it will appreciate more than the K-38 over any given period of time. I also suspect the current value of the 27-2 is greater than that of the K-38, so the appreciation is on a larger base. That sounds like a winner----------to me. You do what makes you happy.
Ralph Tremaine
And all that said, shooter grade guns will appreciate at a snail's pace compared to their pristine brothers and sisters. Plan B then becomes do nothing now--except save up for a better gun (higher condition----the very highest condition you can find). Condition is akin to horsepower and money: Some's good, more's better, and too much is just right!!