This doesn't look like the usual hallmarks, but the initials look right. I have never seen the tabs soldered on like that before. Any opinions? It is very well made and heavy.
I would be very suspicious of that. The HA looks right but it is an intaglio mark while the soldered on pieces are incuse. I know there are people out there that add marks to pieces like this. That bracelet design has been done by many artisans.