Sorry for the confusion; but the piece above, marked, "Imperial" is a lead-based typemetal, not Babbitt, made probably in the 20s or 30s by the Imperial Type Metal Co. (base on sales brochures and other literature I've found). The 'Special-A' stamp on it is probably the key to its exact composition, but I've yet to find any reference to that.
The Babbitt ingots are marked QQT-390 Grade 2, so I know what they are for sure.
I made 60lbs of Pewter ingots that look just like those. Not just the yellow, but the layered different colors.
I know what I made was 100% pewter ingots as I carefully inspected each piece. My guess at the time was that, being used to melting scrap lead , I let the Pewter melt get TOO HOT!
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| BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
| BR | Bench Rest | M | Magnum | RN | Round Nose |
| BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
| C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
| HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
| PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
| LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
| GC | Gas Check |
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