Question: Shields under the Migration Period.

[Martin Wallgren]

What is the common thought on the size and form of shields from the Migrationperiod (300-700 AD). When you look at reconstruktions one often see oval shields. What was the most common shape and size in scandinavia during this period? Is there anyone who have suggestions or pics of finds from the Vendelperiod graves?

Need some information for a reconstruction so I´m greatful for answers.