39... I'd look for an older one personally. Request permission for access to the EE and put ou a WTB ad... I'd bet you could find one quick there. Marlins 39's are, from what I've read, one of the more difficult rifles to build properly because they require quite a bit of hand fitting, hence the price. Marlin was the master in that regard... Remington, not s'much.
I read over on marlinowners that for over 40 years, from the 50's to the mid-late 90's, there was one man responsible for final assembly of all the model 39's. When that man retired the model 39's glory years began to fade. I'd look for one made during that time period.