Tuckable holster for an old S&W 59

High Noon makes 'em for the 915. They are at the bottom of the page.

http://www.highnoonholsters.com/Pro...nside_The_Waistband/inside_the_waistband.html

This should do until you find something that is the cats meow. I carry my Ruger P95 in this holster. I have yet to find a better IWB holster for it. I have a Blackhawck 3 slot paddle holster I use for OWB carry. The paddle holster works very well with a Hawaiian shirt.
http://www.walmart.com/ip/Blackhawk-Sportster-Ambidextrous-Holster/16879884

It depends on where you want to wear it. That model is a straight drop, which you would normally wear forward of the hip.

I prefer to wear holsters aft of the hip, for me in the 3:30 - 4:00 area. This model, the "Closing Argument", with 15 degrees of cant, would work better for my preferred carry position. Additionally, it would have a sweat shield.

http://www.highnoonholsters.com/Product_Line/Closing_Argument/closing_argument.html