But the last time we sold off old 35mm cameras we got 25 bucks for them. And the buyers would expect life time support. As such when a family member finds these old horses I suggest Goodwill or giving them away AS-IS.
The meter on the old OM1, bought at ebay's site, is responding to light, when there isn't a lens mounted on the body, but when there is, it just won't react to any changes in light, remaining still.
I have changed the old mercury battery with alcaline just in case, even used an extention with 2A batteries, but no luck. I need to sell, and it would be worth more with the meter working.