I guess after some research that the casting is early Zinc? My guess was Aluminium, just post WW2 as I've see one or two of those 'naughty German soldier' ashtrays. Here's a larger version - 1.3Mb .jpg I like the rubbed sections of the front figures and the almost pristine quality of the backside.
Life is very busy here in Brisbane, Australia inspite of falling retail sales, insurance premium hikes, power utilities charging unbridled fees for gas and electricity, interest rate rises, a two speed economy, both sides of politics without a decent future strategy, make a guess . . . what's a kilo of bananas worth? - AUD$16.99 and today's currency rate: AUD$1.06=US$1.00