I wonder ...
Less than $5 - but I bought it around 1960 and I don't recall the exact price I paid.[/QUOTE
$5 in 1960 is the same as $38 today.
Mine was $30-something on BST, in excellent condition, and well worth it.
I bought 3 of them new (1970, 1980, and in 1983). Every time I moved I could not find where I packed it so bought another one. If I want to remember when I moved I just look at the code dates on my black beauties
I think I paid between $2.00 and $4.00 for them when they were new.