https://www.ebay.com/p/1971-40-Silver-Uncirculated-Eisenhower-Dollar/1932075981 The 1971 (P) has no proof counterpart. The 1971-s is proof though. Answer: NO
The 1971-S 40% silver was issued as an uncirculated coin in the flimsy plastic in a blue envelope, aka "Blue Ike", and in a hard capsule like the GSA CC dollars, with a brown cardboard sleeve, aka "Brown Ike".