Hi,
I've looked up the KM catalog.
for the coins:
During the dominion status,
no coins were issued for general circulation. Also there are no government records to back the pattern coinage as suggested by Adian above (even
wiki says so
). However, there are unofficial sources which say otherwise. There are (unconfirmed) reports to suggest that pattern coins may have been stuck, with many such being sold.
Whether they are real or not is debatable in the current absence of government records to support the claims. I've found this
thread at worldofcoins, the closest to the current discussion. Hope this helps.
for the banknotes:
P#71 seems to be the only sure banknote issued in the period of 1949-50. P#72, P#73, amd P#74 don't have a specific date of issue, but they seem to have been pulled out of circulation in the 1951. So, there is a chance of them being from the dominion as well.
As for the P#37, the ones bearing the signature of C. D. Deshmukh, appear to be from the Dominion (given India became a republic in 1950 and Sir Deshmukh retired as the Gov, RBI in 1949).

These banknotes were quite scarce in supply, and formed a miniscule with the India- British notes forming the greater majority of the bulk of the circulating currency. As of now these seem to be the only banknotes from the Dominion of India.
Soubhik.