Speaking of Soviet stuff, he's just found a 1974 five Kopek piece. He's building up to it: I'm sure we'll have a Saxon burial horde by tea time! 
The mystery deepens. Are your lands being overrun by nocturnal, itinerant coin dealers? Has Antiques Roadshow ever visited? Do your farm buildings look like they may have a history of use as a safe house by various sleeper agents from the Abwehr through to the KGB?
Good luck with the Saxon horde. I think you'll find its more likely modern equivalent is a Wrexham FC pin, a very rusty Joe 90 Badge (circa 1969), a handful of roofing nails and a selection of bottle tops of indeterminate age but definitely mid to late 20thC.

Just remember that in Detectorists they passed over the Saxon horde at the end of the first series. The only solution is to dig up the entire field.
