Is this a 504617 Maxi-Ball?

[LeadHead72]

I'm trying to positively identify this Lyman Maxi Ball mould which is simply marked "Lyman 50 Cal".
It certainly looks like a #504617, so I'm wondering if perhaps Lyman at some point stamped their #504617 mould in this manner?
I haven't had the chance to drop any bullets from it but using a micrometer it appears that it would drop a bullet of about .504-.505 diameter and about .900" long.

241215

[243winxb]

Yes is my guess. https://www.ebay.com/itm/Thompson-Center-50-cal-Maxi-ball-bullet-mold-340-gr/223453032961?redirect=mobile
From a Tompson Center kit or as an accessory in a T/C marked box. Mold made buy Lyman and marked Lyman.

My 45 cal ball, Lyman mould came with the kit, in a T/C brand box. But is marked Lyman with numbers.

[LeadHead72]

Thank you, I was pretty sure it had to be a 504617 but didn't want to misrepresent it if putting it up for sale.