Lot of 7 Shamrock Vintage 7" Reel to Reel Magnetic Tape in 4 Boxes, Used

Description

This is a vintage, likely used lot of seven (7) reels of Shamrock 7-inch tape
for reel to reel players
, four (4) of which are in original boxes marked 041, 1/4" x 1,800 ft..
I have no idea what is on the tapes (these were an estate sale find), but they are mostly in very good shape. Boxes have some wear and staining but are fully intact.
Shipping will be USPS Media Mail.