Hello! I have these vintage Bally pumps and hope someone can help me figure out approximate date, size, materials, or point me to resources for finding info. Cut looks 1930s/40s to me? Brown leather appears to be crocodile (has dots). Real? Inner toe box is lined in a tan canvas/twill seen in one photo. They have leather soles, 3.5" heel, probably non-original heel tips. Inner sole has gold printed Made In Switzerland Bally Paris New York label. Hard to see on inner heel is printed "7507 OSMAN". Along the inner side wall are hand written numbers in white but I don't know if those are common to Bally shoes, if there's a code they correspond to re: dates/size and if there are resources for decoding? Any opinions or info appreciated!