Question About Tags on Barbie Clothing

Hello,I have picked up some barbie items.I believe to have been put out in the 70's due to the case that came with them. My problem is the clothing is untagged. How do you know if the clothes are Mattel? Are all barbie clothes tagged? Thanks, Melissa

Mattel stopped using the Black & White Cloth tags with the cursive Barbie in 1972. At some point they began to use the "Genuine Barbie" label - but I do believe (not 100% sure) there was a period of time where no tags were used. Does anyone know how long items where untagged and when the Genuine Barbie tag was first used?
(Speaking of labels, as a side note, the Vintage Barbie Reproduction items have the old style black & white cloth label - but they have the word Reproduction under the Barbie name.)

The clothes do look like Barbie clothes from the later 1970s.