This is a used Tamron macro-focusing 85-210mm long telephoto zoom lens, serial #8642492, that was designed for the Olympus family of manual-focus cameras.
This lens uses the Tamron Adaptall 2 system of mounting. This lens can be used on other makes with a different adapter. Or, you could use another Tamron Adaptall 2 lens on your Olympus with this adapter.
The f-stop range goes from 4.5 to 22, there is a macro setting for close-up work, the condition is 'excellent', it looks nearly new, and it is sold complete with a rear cap and a push-on front cap.
It is offered for $60.00, shipped to the CONUS.
Payment methods include Paypal, money orders, or personal checks.
Thanks for looking!