Remington redemption coupons

[ironhorsez71]

I was recently given by my father some Remington redemption coupons for rimfire (.22lr). Whatever information I can find it said it was a 12 pack of coupons Jan-Dec of 1979, to be used only for that specific month for a mail in to be sent by Remington to the purchasers residence for 1$. I was wondering what they are worth has I only have 6 out of the 12 because my father used 1/2 of them back in 1979. Thank you