Dear Tinman,
The mould was engraved between 1934 - 37 for a privat owner Naumann from erfurt. These are one of three pieces for horsed austrian grenadiers.
The ownership was switched to Venatier (VE 70, VE 71, VE 72 ) and later to Bunzel. The footplate was cleaned and recreated by Bunzel.
The footplate is like a footplate from kieler zinnfiguren today. The sign of Ludwig Frank no more exists.
You will find Herbu and 280 on the footplate. These three flats now signed as Herbu 280, 281, 282.
best regards
henry