Almost every model produced in Japan with hard eyecups from 1947-1970
has 15mm eye relief or better once the eyecups are unscrewed.
It was considered a matter of proper design to support eyeglasses.
Most models also have the little half-round donut spacer to place them against glasses
without having glass-to-glass contact (and grinding). I sometimes tap a tiny bit of flexible
black shirt paint on the donut to eliminate all scratching.
The sharpest detail of any binoculars, esp. over 100 yds. , comes from
the SeeFar 7 x50s I have (Tokyo Kogaku, 'micro-screw' focuser).
They leave the 6.5x32 Meopta MeoPros behind in haze or glare.
They also have an eye relief of 20mm. They are quite rare, though.
A great deal more common is the Stellar 7x50 Independent focus,
Similar in having extremely deep contrast and long-distance performance,
a bit softer in focus at the edges.
The Scope 7x35 Amber Custom (Model 3010) has an extremely flat crisp field,
good color, a solid precision focuser, and 15+ mm eye relief. It may take a trace of
WD40 and some light butter-knife tapping to free up the eyecups.
The Kowa 7x35 Prominar, circa 1970, also has an excellent field, but unfortunately
the hard rubber eyecups demand more torque than I dare use to free them, so I
leave them in non-eyeglass mode.
The Tower 7x35 Featherweight has the best field of all Japanese oldies I have,
but just ekes out 13-15mm. It works for me with small glasses.
None of these models have 'blackouts'. It's a question of how close you
need to be to see the whole field.
A need for inner cleaning is one important aspect with classics.
Almost-perfect outer condition, other than a little dust, usually bodes
well for the prisms. A life in the back of Granpa's closet can yield
some amazinf specimens. A life in the garage or the bait-shack
leaves trouble. Scuffing of the paint on the front is not necessarily
a problem. Dents and puckers....beware.
Independent-focus models fare on average much better
for clean insides, but finer models of center-focus can be great.
Many oldies will need grease replacement on the diopter and WD40
loosening in the hinge and focuser. Bel-Ray bearing grease is great.
Lithium grease turns to glue in ~20 yrs. (I know, I have baked it out).
Old Bushnell Customs can be very easy for eyeglass use and have an excellent view.
Ditto for almost any old Fujinon.
A nice model, with maybe a comprehensive cleaning by Mssrs. Suddarth or others,
could make you and 2 more generations very happy. And...make sure the leather gets
a nice little sip of clear boot polish.