Vintage 1975 Growing Up Skipper Barbie Doll Blonde #7259 Working Arm !!

Please see all pictures. She is working! When arm is rotated she grows and when moved again goes back to skipper size. No clothes or shoes included. She has a white spot on face that could be original flaw? She also has little blemish next to hairline - appearing to be dirt. I didn’t try to remove it other than gently washing- I didn’t want to mess her up. There are two teeny tiny little punctures on one leg that I tried to show - they are barely seen. She is very clean & has good hair.