Hi Andra
I have a front mount vest sitting around, very similar to a 3a vest.
send me your mail and I can send you pictures.
Vest was only used by me, but I use back mount fro the last 6 years now; I´m sure wan´t need it anymore.
The price is about 850.00 Euros and it is located in Portugal.
horizontefilmes@gmail.com
best
Eberhard