Rare Colt 1878 double action, cal 32 WCF

Rare Colt 1878 double action, cal 32 WCF, serialnumber 37159

Only 970 ever made in this cal and only 305 in this configuration having a 5 1/2 inch barrel and blued. 
. Info can be found in the book 'Colt double action revolvers 1878' by don wilkinson. 

Overall 93 to 94 % orig. blue, with a few light roufgh spots, bore, markings and mechanics are perfect, the right  grip is missing a sliver, where the adjustment meets the frame, often the case on 1878 models,  For the colt 1878 Specialist.