I have previously mentioned that the type of 25 paise coin minted in Kolkata in 1972 ("narrow D 1") was apparently resumed at Mumbai during 1977-79. This can now be confirmed.
25 paise narrow D 1 1977 Mumbai.
This subtype/date/mint combination is rather remarkable. All "narrow D" subtypes before 1977 were minted at Kolkata, and at this point in time, the Kolkata mint conformed to the "wide D 3" type of the two other mints. However, the coin illustrated above indicates, that the "narrow D 1" subtype of Kolkata was 'inherited' by Mumbai and applied there temporarily in the late 1970s.
