Regret I can't help with anything positive, other than to comment that had there been some age then the base would have probably been EPNS, and would have been marked as such - although that may apply to British only. Those bases which were'nt EPNS, as with some examples which were made of aluminiun, are easy to tell and are more likely to be mid C20 or a tad earlier. Would agree that the flowers do look like fushias