John,
I have sent two pics to your email as I haven't mastered posting pics here!

Please feel free to put up here if you wish. The pistol is numbered 058927 and is
blued and dated for either 3 or 5 (indistinct, but one or 'tother) 51 the top bares
the Diana huntress and DIANA Mod 2 British Made, light wood grip.

My boxed example is marked British Made for 4 54 blued, dark wood grip.

Plated model is for 4 50 presumably British made because of the date but there is no origin, just DIANA Mod 2 light wood grip.

My other example is for 12 64 and says Made in Great Britain, dark wood grip.

Chris.