Einstein 1979 poster USPS $.15 stamp original Rare

When the 1979 Einstein stamp came out at the USPS This poster was displayed on the PO wall to commemorate the $.15 stamp. I asked the teller what they do with them, & if I could have it afterwords. Got it! Large wall poster size. Original poster: not a reprint! Paper can wear over time; this poster is 42 yrs old. folded in storage, starts to wear at the folds so I did not open it all the way to Photograph it. I will let the buyer do the minor taping/repairing, carefully. see pics re faint spots. I could not find another one for sale online so this is very rare