The guitar that Shekhar plays in this movie was not made in 1962 (when the movie is set). The first synthetic roundbacks, introduced by Ovation, weren't in production until 1966, and the particular model seen in the film was brought in much later than that.
Lolita's aunt is shown working in a scene on a USHA sewing machine. The film is set in 1960s. The model of the sewing machine is not made in the '60s.
The movie features ads for Saridon, an analgesic and a "headache specialist". (The company making Saridon, Boots Piramal Healtcare Pvt Ltd, was one of the sponsors of the movie.) Saridon was launched in India in 1969. The movie is set in 1962.
When Parineeta learns about Hotel Heritage, she is seen walking. Old cars are shown but there also Ambassador Mark 4. This model was launched in 1979.
The first Elvis record disk they show in the film towards the beginning shows Elvis in his White diamond-studded suit and bloated look. This was how Elvis looked in the 1970s. The film is set in 1962.