As some of you know I'm attempting to do a byf44 letter block collection and needed a d block. One came up on gb and I was lucky enough to get it for a reasonable price. Less than 2 weeks later another one from the same store (total coincidence that they came into the shop) popped up with some features I don't have in my byf44 collection like the milled bottom metal and e/135 marked bolt so I bid on it as well and got if dirt cheap. I was planning on selling the first but once they were both in hand I couldn't let either go.
The milled bottom metal is somewhat unusual although not exactly rare but the floor plate numbering is odd for a d block. MO was all over the place with numbering patterns early in 44 for some reason. The e/135 bolt is also not that rare but they are harder to find. 1 in 10 would be very generous. As prolific a manufacturer as MO was they really relied heavily on subcontracted bolts. The later d block also has a MO made bolt but it lacks acceptance for some reason. The machining patterns and the inspector stamp on the bottom flat give it away.
Neither one is competing for the spot of top condition in my collection but they're both honest all matching units.
When viewing the photos, the early d block is always the top one. The serials should tell which is which in the other pics.
The milled bottom metal is somewhat unusual although not exactly rare but the floor plate numbering is odd for a d block. MO was all over the place with numbering patterns early in 44 for some reason. The e/135 bolt is also not that rare but they are harder to find. 1 in 10 would be very generous. As prolific a manufacturer as MO was they really relied heavily on subcontracted bolts. The later d block also has a MO made bolt but it lacks acceptance for some reason. The machining patterns and the inspector stamp on the bottom flat give it away.
Neither one is competing for the spot of top condition in my collection but they're both honest all matching units.
When viewing the photos, the early d block is always the top one. The serials should tell which is which in the other pics.



















Last edited: