I have a 53E in 12 gauge, ordered it directly from Spain in the mid 70s. Gun still looks new, may have shot 10 boxes through it 28" barrels, semi beaver tail, mod and full chocked. killed a few turkeys, a couple a pheasant, and a few doves.
Dr. P. Hit it on the head,
The 53 is one of AYA,s early catalog gun, a semi copy of a Purdy system. You can't go wrong!