Nice score! Congrats. The Grabow looks like a shape 12(small Apple) or 10(medium Apple). Embers did pretty good with the spades, the Berwyck line did have shiny oversized aluminum ones on a very small number but most were white. Here are some notes on blue spades from a man who knew better than anyone, the recently passed Tom Douglas
"Blue color from light to dark depending on supplied plastic sheeting used.
Blue spades used on all Duke filter lines from early 1960’s until 1993/4..
In the early 1960's, DG introduced the DUKE filter pipes, and they featured a blue spade, except for the Ajustomatic DUKEs which featured white spades. Probably about this time, DG also introduced push stem pipes using a metal cleaner insert, and these push stem pipes featured a yellow spade emblem.
So in the early 1960's DG was producing white spade Ajustomatic pipes, blue spade push stem filter pipes, yellow spade push stem metal cleaner pipes, and orange spade WESTBROOKs.
We were still using the colors in 1991. I guess they changed about 93/94. td"